diff --git a/src/hippopt/base/opti_callback.py b/src/hippopt/base/opti_callback.py
index 3cfc2576..d4c1aa17 100644
--- a/src/hippopt/base/opti_callback.py
+++ b/src/hippopt/base/opti_callback.py
@@ -27,6 +27,7 @@ class CallbackCriterion(abc.ABC):
     def __init__(self) -> None:
         """"""
         self.opti = None
+        self.opti_debug = None
 
     @abc.abstractmethod
     def satisfied(self) -> bool:
@@ -69,6 +70,10 @@ def set_opti(self, opti: cs.Opti) -> None:
         self.opti = weakref.proxy(opti)
         self.reset()
 
+    def update_opti_debug(self, opti_debug: cs.OptiAdvanced) -> None:
+        """"""
+        self.opti_debug = opti_debug
+
 
 class BestCost(CallbackCriterion):
     """"""
@@ -107,7 +112,7 @@ def update(self) -> None:
     def _get_current_cost(self) -> float:
         """"""
 
-        return self.opti.debug.value(self.opti.f)
+        return self.opti_debug.value(self.opti.f)
 
 
 class AcceptableCost(CallbackCriterion):
@@ -151,7 +156,7 @@ def update(self) -> None:
     def _get_current_cost(self) -> float:
         """"""
 
-        return self.opti.debug.value(self.opti.f)
+        return self.opti_debug.value(self.opti.f)
 
 
 class AcceptablePrimalInfeasibility(CallbackCriterion):
@@ -199,7 +204,7 @@ def update(self) -> None:
     def _get_current_primal_infeasibility(self) -> float:
         """"""
 
-        return self.opti.debug.stats()["iterations"]["inf_pr"][-1]
+        return self.opti_debug.stats()["iterations"]["inf_pr"][-1]
 
 
 class BestPrimalInfeasibility(CallbackCriterion):
@@ -240,7 +245,7 @@ def update(self) -> None:
     def _get_current_primal_infeasibility(self) -> float:
         """"""
 
-        return self.opti.debug.stats()["iterations"]["inf_pr"][-1]
+        return self.opti_debug.stats()["iterations"]["inf_pr"][-1]
 
 
 class CombinedCallbackCriterion(CallbackCriterion, abc.ABC):
@@ -274,6 +279,13 @@ def set_opti(self, opti: cs.Opti) -> None:
         self.lhs.set_opti(opti)
         self.rhs.set_opti(opti)
 
+    @final
+    def update_opti_debug(self, opti_debug: cs.OptiAdvanced) -> None:
+        """"""
+
+        self.lhs.update_opti_debug(opti_debug)
+        self.rhs.update_opti_debug(opti_debug)
+
 
 class OrCombinedCallbackCriterion(CombinedCallbackCriterion):
     """"""
@@ -330,6 +342,8 @@ def __init__(
 
     def call(self, i: int) -> None:
         """"""
+        opti_debug = self.opti.debug
+        self.criterion.update_opti_debug(opti_debug)
 
         if self.criterion.satisfied():
             self.criterion.update()
@@ -338,24 +352,22 @@ def call(self, i: int) -> None:
             _logger.info(f"[i={i}] New best intermediate variables")
 
             self.best_iteration = i
-            self.best_cost = self.opti.debug.value(self.opti.f)
+            self.best_cost = opti_debug.value(self.opti.f)
             for variable in self.variables:
                 if self.ignore_map[variable]:
                     continue
                 try:
-                    self.best_objects[variable] = self.opti.debug.value(variable)
+                    self.best_objects[variable] = opti_debug.value(variable)
                 except Exception as err:  # noqa
                     self.ignore_map[variable] = True
             for parameter in self.parameters:
                 if self.ignore_map[parameter]:
                     continue
-                self.best_objects[parameter] = self.opti.debug.value(parameter)
+                self.best_objects[parameter] = opti_debug.value(parameter)
                 self.ignore_map[parameter] = True  # Parameters are saved only once
 
-            self.best_cost_values = {
-                cost: self.opti.debug.value(cost) for cost in self.cost
-            }
+            self.best_cost_values = {cost: opti_debug.value(cost) for cost in self.cost}
             self.best_constraint_multipliers = {
-                constraint: self.opti.debug.value(self.opti.dual(constraint))
+                constraint: opti_debug.value(self.opti.dual(constraint))
                 for constraint in self.constraints
             }