diff --git a/app/controllers/concerns/simplefin_items/maps_helper.rb b/app/controllers/concerns/simplefin_items/maps_helper.rb
index 8067cb50461..70495b377a3 100644
--- a/app/controllers/concerns/simplefin_items/maps_helper.rb
+++ b/app/controllers/concerns/simplefin_items/maps_helper.rb
@@ -87,7 +87,8 @@ def compute_duplicate_only_flag(stats)
           end
         end
         errs.present? && errs.all? { |m| m.to_s.downcase.include?("duplicate upstream account detected") }
-      rescue
+      rescue StandardError => e
+        Rails.logger.warn("SimpleFin maps: compute_duplicate_only_flag failed: #{e.class} - #{e.message}")
         false
       end
   end
diff --git a/db/migrate/20251103185320_drop_was_merged_from_transactions.rb b/db/migrate/20251103185320_drop_was_merged_from_transactions.rb
index 6adb411ce15..8992230ca16 100644
--- a/db/migrate/20251103185320_drop_was_merged_from_transactions.rb
+++ b/db/migrate/20251103185320_drop_was_merged_from_transactions.rb
@@ -7,9 +7,9 @@ def up
   end
 
   def down
-    # Recreate the column for rollback compatibility
+    # Recreate the column for rollback compatibility with original constraints
     unless column_exists?(:transactions, :was_merged)
-      add_column :transactions, :was_merged, :boolean
+      add_column :transactions, :was_merged, :boolean, null: false, default: false
     end
   end
 end