diff --git a/app/services/bulk_upload/lettings/year2024/row_parser.rb b/app/services/bulk_upload/lettings/year2024/row_parser.rb
index aa3025fef..927d892a9 100644
--- a/app/services/bulk_upload/lettings/year2024/row_parser.rb
+++ b/app/services/bulk_upload/lettings/year2024/row_parser.rb
@@ -1145,7 +1145,7 @@ private
     attributes["renewal"] = renewal
     attributes["scheme"] = scheme
     attributes["location"] = location
-    attributes["assigned_to"] = bulk_upload.user.support? ? nil : (assigned_to || bulk_upload.user) # don't set to support users, leave as nil - validate nil
+    attributes["assigned_to"] = bulk_upload.user.support? ? nil : (assigned_to || bulk_upload.user)
     attributes["created_by"] = bulk_upload.user
     attributes["needstype"] = field_4
     attributes["rent_type"] = RENT_TYPE_BU_MAPPING[field_11]
diff --git a/app/services/bulk_upload/sales/year2024/row_parser.rb b/app/services/bulk_upload/sales/year2024/row_parser.rb
index 5ef7761b7..cf800ea9b 100644
--- a/app/services/bulk_upload/sales/year2024/row_parser.rb
+++ b/app/services/bulk_upload/sales/year2024/row_parser.rb
@@ -924,7 +924,7 @@ private
 
     attributes["owning_organisation"] = owning_organisation
     attributes["managing_organisation"] = managing_organisation
-    attributes["assigned_to"] = assigned_to || bulk_upload.user
+    attributes["assigned_to"] = bulk_upload.user.support? ? nil : (assigned_to || bulk_upload.user)
     attributes["created_by"] = bulk_upload.user
     attributes["hhregres"] = field_72
     attributes["hhregresstill"] = field_73