diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3aeeb4e2f3..2c86c75e58 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,8 @@
 # Changelog
 
+### Fixed 
+- Fixed a bug in the deep of plans where the old identifier was being copied into the new plan. We now copy the generated id of the new plan to the identifier field.
+
 ## v4.2.0
 
 **Note this upgrade is mainly a migration from Bootstrap 3 to Bootstrap 5.** 
diff --git a/app/models/plan.rb b/app/models/plan.rb
index 7626bba207..6dd7c76774 100644
--- a/app/models/plan.rb
+++ b/app/models/plan.rb
@@ -254,7 +254,12 @@ def self.deep_copy(plan)
     plan_copy = plan.dup
     plan_copy.title = "Copy of #{plan.title}"
     plan_copy.feedback_requested = false
+    # Don't copy the identifier as it will be regenerated
+    plan_copy.identifier = nil
     plan_copy.save!
+    # Copy newly generated Id to the identifier
+    plan_copy.identifier = plan_copy.id
+    plan.save!
     plan.answers.each do |answer|
       answer_copy = Answer.deep_copy(answer)
       answer_copy.plan_id = plan_copy.id