diff --git a/.cloud66/manifest.yml b/.cloud66/manifest.yml
new file mode 100644
index 0000000000..da5448e6e5
--- /dev/null
+++ b/.cloud66/manifest.yml
@@ -0,0 +1,3 @@
+rails:
+   configuration:
+     ruby_version: 3.2.2
diff --git a/.ruby-version b/.ruby-version
index ef538c2810..be94e6f53d 100644
--- a/.ruby-version
+++ b/.ruby-version
@@ -1 +1 @@
-3.1.2
+3.2.2
diff --git a/Gemfile b/Gemfile
index 2720484e1f..3ff38e6a9d 100644
--- a/Gemfile
+++ b/Gemfile
@@ -5,8 +5,6 @@ git_source(:github) do |repo_name|
   "https://github.com/#{repo_name}.git"
 end
 
-ruby "3.1.2"
-
 ###### BASIC FRAMEWORKS ######
 
 # User management and login workflow.
@@ -202,7 +200,7 @@ group :test do
   # More concise test ("should") matchers
   gem 'shoulda-matchers', '~> 5.3'
   # Selenium webdriver automatic installation and update.
-  gem 'selenium-webdriver', '~> 4.10'
+  gem 'selenium-webdriver', '~> 4.16'
   # Mock HTTP requests and ensure they are not called during tests.
   gem "webmock", "~> 3.19"
 end
diff --git a/Gemfile.lock b/Gemfile.lock
index eaaaa88cf2..fb532f8913 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -96,12 +96,12 @@ GEM
       autoprefixer-rails (>= 9.1.0)
       popper_js (>= 2.11.6, < 3)
       sassc-rails (>= 2.0.0)
-    brakeman (6.0.1)
+    brakeman (6.1.0)
     brow (0.4.1)
     bugsnag (6.26.0)
       concurrent-ruby (~> 1.0)
     builder (3.2.4)
-    bullet (7.1.3)
+    bullet (7.1.4)
       activesupport (>= 3.0.0)
       uniform_notifier (~> 1.11)
     capybara (3.39.2)
@@ -262,7 +262,7 @@ GEM
       multi_xml (>= 0.5.2)
     i18n (1.14.1)
       concurrent-ruby (~> 1.0)
-    icalendar (2.10.0)
+    icalendar (2.10.1)
       ice_cube (~> 0.16)
     ice_cube (0.16.4)
     ice_nine (0.11.2)
@@ -276,7 +276,7 @@ GEM
     jbuilder (2.11.5)
       actionview (>= 5.0.0)
       activesupport (>= 5.0.0)
-    json (2.6.3)
+    json (2.7.1)
     jwt (2.7.1)
     kaminari (1.2.2)
       activesupport (>= 4.1.0)
@@ -290,7 +290,7 @@ GEM
       activerecord
       kaminari-core (= 1.2.2)
     kaminari-core (1.2.2)
-    knapsack_pro (5.7.0)
+    knapsack_pro (6.0.3)
       rake
     language_server-protocol (3.17.0.3)
     launchy (2.5.2)
@@ -359,11 +359,11 @@ GEM
     newrelic_rpm (9.6.0)
       base64
     nio4r (2.5.9)
-    nokogiri (1.15.4-arm64-darwin)
+    nokogiri (1.15.5-arm64-darwin)
       racc (~> 1.4)
-    nokogiri (1.15.4-x86_64-darwin)
+    nokogiri (1.15.5-x86_64-darwin)
       racc (~> 1.4)
-    nokogiri (1.15.4-x86_64-linux)
+    nokogiri (1.15.5-x86_64-linux)
       racc (~> 1.4)
     notiffany (0.1.3)
       nenv (~> 0.1)
@@ -486,7 +486,7 @@ GEM
       redis-client (>= 0.17.0)
     redis-client (0.18.0)
       connection_pool
-    regexp_parser (2.8.2)
+    regexp_parser (2.8.3)
     request_store (1.5.1)
       rack (>= 1.4)
     responders (3.1.1)
@@ -561,7 +561,7 @@ GEM
       sprockets (> 3.0)
       sprockets-rails
       tilt
-    selenium-webdriver (4.15.0)
+    selenium-webdriver (4.16.0)
       rexml (~> 3.2, >= 3.2.5)
       rubyzip (>= 1.2.2, < 3.0)
       websocket (~> 1.0)
@@ -593,7 +593,7 @@ GEM
       actionpack (>= 5.2)
       activesupport (>= 5.2)
       sprockets (>= 3.0.0)
-    standard (1.32.0)
+    standard (1.32.1)
       language_server-protocol (~> 3.17.0.2)
       lint_roller (~> 1.0)
       rubocop (~> 1.57.2)
@@ -609,7 +609,7 @@ GEM
       railties (>= 6.0.0)
     strong_migrations (1.6.4)
       activerecord (>= 5.2)
-    terser (1.1.19)
+    terser (1.1.20)
       execjs (>= 0.3.0, < 3)
     thor (1.3.0)
     tilt (2.2.0)
@@ -729,7 +729,7 @@ DEPENDENCIES
   rubocop-rails (~> 2.22.2)
   rufus-scheduler
   sass-rails
-  selenium-webdriver (~> 4.10)
+  selenium-webdriver (~> 4.16)
   shoulda-matchers (~> 5.3)
   simple_form
   simplecov
@@ -742,8 +742,5 @@ DEPENDENCIES
   web-console
   webmock (~> 3.19)
 
-RUBY VERSION
-   ruby 3.1.2p20
-
 BUNDLED WITH
    2.4.22
diff --git a/app/events/adjustment_event.rb b/app/events/adjustment_event.rb
index a472e5f744..e0f1978c57 100644
--- a/app/events/adjustment_event.rb
+++ b/app/events/adjustment_event.rb
@@ -4,7 +4,7 @@ def self.publish(adjustment)
     create(
       eventable: adjustment,
       organization_id: adjustment.organization_id,
-      event_time: Time.zone.now,
+      event_time: adjustment.created_at,
       data: EventTypes::InventoryPayload.new(
         items: EventTypes::EventLineItem.from_line_items(adjustment.line_items, to: adjustment.storage_location_id)
       )
diff --git a/app/events/audit_event.rb b/app/events/audit_event.rb
index 247400ae94..c4ed421e8e 100644
--- a/app/events/audit_event.rb
+++ b/app/events/audit_event.rb
@@ -6,7 +6,7 @@ def self.publish(audit)
     create(
       eventable: audit,
       organization_id: audit.organization_id,
-      event_time: Time.zone.now,
+      event_time: audit.updated_at,
       data: EventTypes::AuditPayload.new(
         storage_location_id: audit.storage_location_id,
         items: EventTypes::EventLineItem.from_line_items(audit.line_items, to: audit.storage_location_id)
diff --git a/app/events/distribution_event.rb b/app/events/distribution_event.rb
index 6efc7f6984..11a256172a 100644
--- a/app/events/distribution_event.rb
+++ b/app/events/distribution_event.rb
@@ -4,7 +4,7 @@ def self.publish(distribution)
     create(
       eventable: distribution,
       organization_id: distribution.organization_id,
-      event_time: Time.zone.now,
+      event_time: distribution.created_at,
       data: EventTypes::InventoryPayload.new(
         items: EventTypes::EventLineItem.from_line_items(distribution.line_items, from: distribution.storage_location_id)
       )
diff --git a/app/events/donation_event.rb b/app/events/donation_event.rb
index 83f5207d76..adf923c461 100644
--- a/app/events/donation_event.rb
+++ b/app/events/donation_event.rb
@@ -4,7 +4,7 @@ def self.publish(donation)
     create(
       eventable: donation,
       organization_id: donation.organization_id,
-      event_time: Time.zone.now,
+      event_time: donation.created_at,
       data: EventTypes::InventoryPayload.new(
         items: EventTypes::EventLineItem.from_line_items(donation.line_items, to: donation.storage_location_id)
       )
diff --git a/app/events/event_types/inventory.rb b/app/events/event_types/inventory.rb
index 5c3da47279..60cd032e04 100644
--- a/app/events/event_types/inventory.rb
+++ b/app/events/event_types/inventory.rb
@@ -16,6 +16,19 @@ def self.from(organization_id)
         storage_locations: org.storage_locations.map { |s| [s.id, EventTypes::EventStorageLocation.from(s)] }.to_h)
     end
 
+    # @param item_id [Integer]
+    # @param quantity [Integer]
+    # @param location [Integer]
+    def set_item_quantity(item_id:, quantity:, location:)
+      storage_locations[location] ||= EventTypes::EventStorageLocation.new(id: location, items: {})
+      storage_locations[location].set_inventory(item_id, quantity)
+    end
+
+    # @param item_id [Integer]
+    # @param quantity [Integer]
+    # @param from_location [Integer]
+    # @param to_location [Integer]
+    # @param validate [Boolean]
     def move_item(item_id:, quantity:, from_location: nil, to_location: nil, validate: true)
       if from_location
         if storage_locations[from_location].nil? && validate
diff --git a/app/events/inventory_aggregate.rb b/app/events/inventory_aggregate.rb
index dada21f0f8..e1bdb995ae 100644
--- a/app/events/inventory_aggregate.rb
+++ b/app/events/inventory_aggregate.rb
@@ -8,27 +8,37 @@ def on(*event_types, &block)
       end
     end
 
-    # @param organization_id
+    # @param organization_id [Integer]
+    # @param first_event [Integer]
+    # @param last_event [Integer]
+    # @param validate [Boolean]
     # @return [EventTypes::Inventory]
-    def inventory_for(organization_id)
+    def inventory_for(organization_id, first_event: nil, last_event: nil, validate: false)
       events = Event.for_organization(organization_id)
+      if first_event
+        events = events.where("id >= ?", first_event)
+      end
+      if last_event
+        events = events.where("id <= ?", last_event)
+      end
       inventory = EventTypes::Inventory.from(organization_id)
       events.group_by { |e| [e.eventable_type, e.eventable_id] }.each do |_, event_batch|
-        last_event = event_batch.max_by(&:event_time)
-        handle(last_event, inventory)
+        last_grouped_event = event_batch.max_by(&:updated_at)
+        handle(last_grouped_event, inventory, validate: validate)
       end
       inventory
     end
 
     # @param event [Event]
     # @param inventory [Inventory]
-    def handle(event, inventory)
+    # @param validate [Boolean]
+    def handle(event, inventory, validate: false)
       handler = @handlers[event.class]
       if handler.nil?
         Rails.logger.warn("No handler found for #{event.class}, skipping")
         return
       end
-      handler.call(event, inventory)
+      handler.call(event, inventory, validate: validate)
     end
 
     # @param payload [EventTypes::InventoryPayload]
@@ -43,21 +53,30 @@ def handle_inventory_event(payload, inventory, validate: true)
           validate: validate)
       end
     end
+
+    # @param payload [EventTypes::InventoryPayload]
+    # @param inventory [EventTypes::Inventory]
+    def handle_audit_event(payload, inventory)
+      payload.items.each do |line_item|
+        inventory.set_item_quantity(item_id: line_item.item_id,
+          quantity: line_item.quantity,
+          location: line_item.to_storage_location)
+      end
+    end
   end
 
   on DonationEvent, DistributionEvent, AdjustmentEvent, PurchaseEvent,
     TransferEvent, DistributionDestroyEvent, DonationDestroyEvent,
     PurchaseDestroyEvent, TransferDestroyEvent,
-    KitAllocateEvent, KitDeallocateEvent do |event, inventory|
-    handle_inventory_event(event.data, inventory, validate: false)
+    KitAllocateEvent, KitDeallocateEvent do |event, inventory, validate: false|
+    handle_inventory_event(event.data, inventory, validate: validate)
   end
 
-  on AuditEvent do |event, inventory|
-    inventory.storage_locations[event.data.storage_location_id].reset!
-    handle_inventory_event(event.data, inventory, validate: false)
+  on AuditEvent do |event, inventory, validate: false|
+    handle_audit_event(event.data, inventory)
   end
 
-  on SnapshotEvent do |event, inventory|
+  on SnapshotEvent do |event, inventory, validate: false|
     inventory.storage_locations.clear
     inventory.storage_locations.merge!(event.data.storage_locations)
   end
diff --git a/app/events/purchase_event.rb b/app/events/purchase_event.rb
index 910c295916..ac00a67003 100644
--- a/app/events/purchase_event.rb
+++ b/app/events/purchase_event.rb
@@ -4,7 +4,7 @@ def self.publish(purchase)
     create(
       eventable: purchase,
       organization_id: purchase.organization_id,
-      event_time: Time.zone.now,
+      event_time: purchase.created_at,
       data: EventTypes::InventoryPayload.new(
         items: EventTypes::EventLineItem.from_line_items(purchase.line_items, to: purchase.storage_location_id)
       )
diff --git a/app/events/transfer_event.rb b/app/events/transfer_event.rb
index e0343a4028..f8cf4f9624 100644
--- a/app/events/transfer_event.rb
+++ b/app/events/transfer_event.rb
@@ -4,7 +4,7 @@ def self.publish(transfer)
     create(
       eventable: transfer,
       organization_id: transfer.organization_id,
-      event_time: Time.zone.now,
+      event_time: transfer.created_at,
       data: EventTypes::InventoryPayload.new(
         items: EventTypes::EventLineItem.from_line_items(transfer.line_items,
           from: transfer.from.id,
diff --git a/app/models/partner.rb b/app/models/partner.rb
index 23c8dec134..392ac9a388 100644
--- a/app/models/partner.rb
+++ b/app/models/partner.rb
@@ -235,6 +235,17 @@ def invite_new_partner
   end
 
   def should_invite_because_email_changed?
-    email_changed? and (invited? or awaiting_review? or recertification_required? or approved?)
+    email_changed? &&
+      (
+        invited? ||
+        awaiting_review? ||
+        recertification_required? ||
+        approved?
+      ) &&
+      !partner_user_with_same_email_exist?
+  end
+
+  def partner_user_with_same_email_exist?
+    User.exists?(email: email) && User.find_by(email: email).has_role?(Role::PARTNER, self)
   end
 end
diff --git a/app/views/users/mailer/reset_password_instructions.html.erb b/app/views/users/mailer/reset_password_instructions.html.erb
index 65def06f7c..e3f1a5ce9f 100644
--- a/app/views/users/mailer/reset_password_instructions.html.erb
+++ b/app/views/users/mailer/reset_password_instructions.html.erb
@@ -1,5 +1,7 @@
 <p>Hello <%= @resource.email %>!</p>
 
+<p>This is an automated email from the human essentials application. Please contact your diaper bank directly with any request-related questions.</p>
+
 <p>Someone has requested a link to change your password. You can do this through the link below.</p>
 
 <p><%= link_to 'Change my password', edit_password_url(@resource, reset_password_token: @token) %></p>
diff --git a/db/migrate/20231201194409_fix_event_times.rb b/db/migrate/20231201194409_fix_event_times.rb
new file mode 100644
index 0000000000..f6ec957a82
--- /dev/null
+++ b/db/migrate/20231201194409_fix_event_times.rb
@@ -0,0 +1,9 @@
+class FixEventTimes < ActiveRecord::Migration[7.0]
+  def change
+    Event.where(type: %i(DistributionEvent DonationEvent PurchaseEvent)).find_each do |event|
+      next if event.eventable.nil?
+
+      event.update_attribute(:event_time, event.eventable.created_at)
+    end
+  end
+end
diff --git a/db/schema.rb b/db/schema.rb
index 6fa13acbfc..54906d1330 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema[7.0].define(version: 2023_11_17_141301) do
+ActiveRecord::Schema[7.0].define(version: 2023_12_01_194409) do
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
 
diff --git a/spec/events/inventory_aggregate_spec.rb b/spec/events/inventory_aggregate_spec.rb
index cd9c066f62..f310d1be94 100644
--- a/spec/events/inventory_aggregate_spec.rb
+++ b/spec/events/inventory_aggregate_spec.rb
@@ -336,6 +336,7 @@
             id: storage_location1.id,
             items: {
               item1.id => EventTypes::EventItem.new(item_id: item1.id, quantity: 20),
+              item2.id => EventTypes::EventItem.new(item_id: item2.id, quantity: 10),
               item3.id => EventTypes::EventItem.new(item_id: item3.id, quantity: 10)
             }
           ),
@@ -446,50 +447,92 @@
     end
   end
 
-  it "should process multiple events" do
-    donation = FactoryBot.create(:donation, organization: organization, storage_location: storage_location1)
-    donation.line_items << build(:line_item, quantity: 50, item: item1)
-    donation.line_items << build(:line_item, quantity: 30, item: item2)
-    DonationEvent.publish(donation)
-
-    donation2 = FactoryBot.create(:donation, organization: organization, storage_location: storage_location1)
-    donation2.line_items << build(:line_item, quantity: 30, item: item1)
-    DonationEvent.publish(donation2)
-
-    donation3 = FactoryBot.create(:donation, organization: organization, storage_location: storage_location2)
-    donation3.line_items << build(:line_item, quantity: 50, item: item2)
-    DonationEvent.publish(donation3)
-
-    # correction event
-    donation3.line_items = [build(:line_item, quantity: 40, item: item2)]
-    DonationEvent.publish(donation3)
-
-    dist = FactoryBot.create(:distribution, organization: organization, storage_location: storage_location1)
-    dist.line_items << build(:line_item, quantity: 10, item: item1)
-    DistributionEvent.publish(dist)
-
-    dist2 = FactoryBot.create(:distribution, organization: organization, storage_location: storage_location2)
-    dist2.line_items << build(:line_item, quantity: 15, item: item2)
-    DistributionEvent.publish(dist2)
-
-    inventory = described_class.inventory_for(organization.id)
-    expect(inventory).to eq(EventTypes::Inventory.new(
-      organization_id: organization.id,
-      storage_locations: {
-        storage_location1.id => EventTypes::EventStorageLocation.new(
-          id: storage_location1.id,
-          items: {
-            item1.id => EventTypes::EventItem.new(item_id: item1.id, quantity: 70),
-            item2.id => EventTypes::EventItem.new(item_id: item2.id, quantity: 30)
-          }
-        ),
-        storage_location2.id => EventTypes::EventStorageLocation.new(
-          id: storage_location2.id,
-          items: {
-            item2.id => EventTypes::EventItem.new(item_id: item2.id, quantity: 25)
-          }
-        )
-      }
-    ))
+  describe "multiple events" do
+    it "should process multiple events" do
+      donation = FactoryBot.create(:donation, organization: organization, storage_location: storage_location1)
+      donation.line_items << build(:line_item, quantity: 50, item: item1)
+      donation.line_items << build(:line_item, quantity: 30, item: item2)
+      DonationEvent.publish(donation)
+
+      donation2 = FactoryBot.create(:donation, organization: organization, storage_location: storage_location1)
+      donation2.line_items << build(:line_item, quantity: 30, item: item1)
+      DonationEvent.publish(donation2)
+
+      donation3 = FactoryBot.create(:donation, organization: organization, storage_location: storage_location2)
+      donation3.line_items << build(:line_item, quantity: 50, item: item2)
+      DonationEvent.publish(donation3)
+
+      # correction event
+      donation3.line_items = [build(:line_item, quantity: 40, item: item2)]
+      DonationEvent.publish(donation3)
+
+      dist = FactoryBot.create(:distribution, organization: organization, storage_location: storage_location1)
+      dist.line_items << build(:line_item, quantity: 10, item: item1)
+      DistributionEvent.publish(dist)
+
+      dist2 = FactoryBot.create(:distribution, organization: organization, storage_location: storage_location2)
+      dist2.line_items << build(:line_item, quantity: 15, item: item2)
+      DistributionEvent.publish(dist2)
+
+      inventory = described_class.inventory_for(organization.id)
+      expect(inventory).to eq(EventTypes::Inventory.new(
+        organization_id: organization.id,
+        storage_locations: {
+          storage_location1.id => EventTypes::EventStorageLocation.new(
+            id: storage_location1.id,
+            items: {
+              item1.id => EventTypes::EventItem.new(item_id: item1.id, quantity: 70),
+              item2.id => EventTypes::EventItem.new(item_id: item2.id, quantity: 30)
+            }
+          ),
+          storage_location2.id => EventTypes::EventStorageLocation.new(
+            id: storage_location2.id,
+            items: {
+              item2.id => EventTypes::EventItem.new(item_id: item2.id, quantity: 25)
+            }
+          )
+        }
+      ))
+    end
+
+    it "should validate incorrect events" do
+      donation = FactoryBot.create(:donation, organization: organization, storage_location: storage_location1)
+      donation.line_items << build(:line_item, quantity: 10, item: item1)
+      DonationEvent.publish(donation)
+
+      dist = FactoryBot.create(:distribution, organization: organization, storage_location: storage_location1)
+      dist.line_items << build(:line_item, quantity: 20, item: item1)
+      DistributionEvent.publish(dist)
+
+      expect { described_class.inventory_for(organization.id, validate: true) }
+        .to raise_error("Could not reduce quantity by 20 for item #{item1.id} in storage location #{storage_location1.id} - current quantity is 10")
+    end
+
+    it "should handle timing correctly" do
+      donation = FactoryBot.create(:donation, organization: organization, storage_location: storage_location1)
+      donation.line_items << build(:line_item, quantity: 30, item: item1)
+      DonationEvent.publish(donation)
+
+      dist = FactoryBot.create(:distribution, organization: organization, storage_location: storage_location1)
+      dist.line_items << build(:line_item, quantity: 10, item: item1)
+      DistributionEvent.publish(dist)
+
+      # correction event
+      donation.line_items[0].quantity = 20
+      DonationEvent.publish(donation)
+
+      inventory = described_class.inventory_for(organization.id, validate: true)
+      expect(inventory).to eq(EventTypes::Inventory.new(
+        organization_id: organization.id,
+        storage_locations: {
+          storage_location1.id => EventTypes::EventStorageLocation.new(
+            id: storage_location1.id,
+            items: {
+              item1.id => EventTypes::EventItem.new(item_id: item1.id, quantity: 10)
+            }
+          )
+        }
+      ))
+    end
   end
 end
diff --git a/spec/models/partner_spec.rb b/spec/models/partner_spec.rb
index 5f7f97b4be..8a9ab494f4 100644
--- a/spec/models/partner_spec.rb
+++ b/spec/models/partner_spec.rb
@@ -218,6 +218,24 @@
       end
     end
 
+    it "should not call the UserInviteService.invite when the partner is changing email to previously used email" do
+      previous_email = partner.email
+      partner.email = "randomtest@email.com"
+      partner.save!
+      partner.email = previous_email
+      partner.save!
+      expect(UserInviteService).not_to have_received(:invite).with(
+        email: previous_email,
+        roles: [Role::PARTNER],
+        resource: partner
+      )
+      expect(UserInviteService).to have_received(:invite).with(
+        email: "randomtest@email.com",
+        roles: [Role::PARTNER],
+        resource: partner
+      )
+    end
+
     [:uninvited, :deactivated].each do |test_status|
       it "should not call the UserInviteService.invite when the partner has status #{test_status} and the email is changed" do
         partner.status = test_status