diff --git a/pom.xml b/pom.xml
index d34fc1360c..593c546d4f 100644
--- a/pom.xml
+++ b/pom.xml
@@ -1313,7 +1313,25 @@
                 </goals>
                 <phase>process-resources</phase>
                 <configuration>
-                  <flattenMode>oss</flattenMode>
+                  <!-- flattenMode:oss does not keep dependencyMangement or will promote all transitive dependencies to direct ones, changing resolution order -->
+                  <pomElements>
+                    <dependencyManagement>expand</dependencyManagement>
+                    <!-- from https://github.com/mojohaus/flatten-maven-plugin/blob/flatten-maven-plugin-1.3.0/src/main/java/org/codehaus/mojo/flatten/FlattenMode.java#L100 -->
+                    <ciManagement>expand</ciManagement>
+                    <contributors>expand</contributors>
+                    <distributionManagement>expand</distributionManagement>
+                    <inceptionYear>expand</inceptionYear>
+                    <issueManagement>expand</issueManagement>
+                    <mailingLists>expand</mailingLists>
+                    <organization>expand</organization>
+                    <prerequisites>expand</prerequisites>
+                    <name>expand</name>
+                    <description>expand</description>
+                    <url>expand</url>
+                    <scm>expand</scm>
+                    <developers>expand</developers>
+                    <repositories>expand</repositories>
+                  </pomElements>
                   <outputDirectory>${project.build.directory}</outputDirectory>
                   <flattenedPomFilename>${project.artifactId}-${project.version}.pom</flattenedPomFilename>
                 </configuration>
diff --git a/src/it/incrementals-and-plugin-bom/pom.xml b/src/it/incrementals-and-plugin-bom/pom.xml
index 692048a441..8e24af634d 100644
--- a/src/it/incrementals-and-plugin-bom/pom.xml
+++ b/src/it/incrementals-and-plugin-bom/pom.xml
@@ -15,6 +15,7 @@
         <revision>1.0</revision>
         <changelist>-SNAPSHOT</changelist>
         <jenkins.version>2.361.4</jenkins.version>
+        <bom.version>1580.v47b_429a_c853a</bom.version>
     </properties>
 
     <repositories>
@@ -34,7 +35,7 @@
             <dependency>
                 <groupId>io.jenkins.tools.bom</groupId>
                 <artifactId>bom-2.361.x</artifactId>
-                <version>1580.v47b_429a_c853a</version>
+                <version>${bom.version}</version>
                 <scope>import</scope>
                 <type>pom</type>
             </dependency>
diff --git a/src/it/incrementals-and-plugin-bom/postbuild.groovy b/src/it/incrementals-and-plugin-bom/postbuild.groovy
index d213f568db..231763ac64 100644
--- a/src/it/incrementals-and-plugin-bom/postbuild.groovy
+++ b/src/it/incrementals-and-plugin-bom/postbuild.groovy
@@ -1,3 +1,13 @@
 assert new File(basedir, '../../local-repo/io/jenkins/plugins/incrementals-and-plugin-bom/1.0-SNAPSHOT/incrementals-and-plugin-bom-1.0-SNAPSHOT.hpi').file
 assert new File(basedir, '../../local-repo/io/jenkins/plugins/incrementals-and-plugin-bom/1.0-rc1234.deadbeef5678/incrementals-and-plugin-bom-1.0-rc1234.deadbeef5678.hpi').file
+String pomXml = new File(basedir, '../../local-repo/io/jenkins/plugins/incrementals-and-plugin-bom/1.0-rc1234.deadbeef5678/incrementals-and-plugin-bom-1.0-rc1234.deadbeef5678.pom').text
+assert pomXml.contains('version>1.0-rc1234.deadbeef5678</version>')
+// https://github.com/jenkinsci/plugin-pom/issues/705
+// line endings need normalising
+assert pomXml.matches('(?s).*<dependencyManagement>\\s*<dependencies>'
+// something from the parent pom dependencyManagement
++ '.*<dependency>\\s*<groupId>javax.servlet</groupId>\\s*<artifactId>javax.servlet-api</artifactId>\\s*<version>3.1.0</version>\\s*</dependency>'
+// something from the bom
++ '.*<dependency>\\s*<groupId>io.jenkins.plugins</groupId>\\s*<artifactId>caffeine-api</artifactId>\\s*<version>2.9.3-65.v6a_47d0f4d1fe</version>\\s*</dependency>'
++ '.*</dependencies>\\s*</dependencyManagement>.*')
 return true