I know there is a lot of similar questions and I've read and followed all of them but i had no luck.
I need help to preserve my registry keys when upgrading. I've tried to enable 'presistence' on its registry key and set the condition to 'OLDPRODUCTS', but it still removes it on upgrade. By the way 'Delete (if present) at uninstall' is also disabled.
I've followed the documentation as well, but nothing seems to do the trick..