update settings minimize

In the ACC app when you're updating a version, there are settings under Advanced that allow you to keep your older versions installed and to keep or discard your preferences. Did you look there and choose to keep your preferences, but the ACC app discarded them anyway? They've been good about not deleting my preferences unless I choose to.

Mind, when you do upgrade versions, you can run into corrupt preferences if you don't start with fresh ones. You just have to be alert to weird things happening, and if they do, then you need to try deleting the preferences and starting with fresh ones.

Let us know if none of this applies to your case and Adobe staff can perhaps help you out better.