Note: testing requires use of developer tools to capture requests, and a terminal to replay them Before checking out MDL-75855 branch Log in as admin Navigate to Reports from user menu Create new report from Users report source Ensure Include default setup is checked Open browser developer tools Switch to Network tab In report editor, add User > Country condition Inspect the request to core_reportbuilder_conditions_add and copy the CURL command as below: Execute the command twice in a terminal Now repeat the process with the User > Country filter Execute the following in your database: SELECT MIN(id) AS id, reportid, uniqueidentifier, iscondition FROM mdl_reportbuilder_filter GROUP BY reportid, uniqueidentifier, iscondition HAVING COUNT(*) > 1 You should see two rows, one each for the user:country condition/filter (these are the duplicated entries) Check out the MDL-75855 branch Run/complete the upgrade Re-run the previous SQL query Confirm that it returns no results Navigate back to the report you previously created Open Conditions in the editor Confirm all previous conditions are still present (including User > Country ) Open Filters in the editor Confirm all previous filters are still present (including User > Country ) Re-run the previously copied curl command for adding the User > Country condition Confirm you receive back an exception with message "Duplicate condition" Re-run the previously copied curl command for adding the User > Country filter Confirm you receive back an exception with message "Duplicate filter" In report editor, add User > Phone condition Confirm condition was successfully added In report editor, add User > Phone filter Confirm filter was successfully added