Hi,
If you do this then you are going to have this issue again.
So you need to follow some of the below steps.
First approch.
Identify if these object came fro second landscape. If yes then you should retrofit this DEV with these changes as they are in production. Then do the fix and move to QUA and can later be passed to production after upgrade.
If not then follow the second approch.
Ask the developers to Do remote compared between DEV- Upgraded QUA and then fix the code in DEV and pass it to QUA. So that you can do the same when you go for production and you dont loose any fix.
I would never suggest to do in QUA as you might get issue in next support pack and it might be difficult to analyse again.
Thanks
Rishi Abrol