Graphics preferences are reset after every upgrade/reinstall to Recommended

1. Make clean viewer install
2. Launch it and change graphics preferences to non-default, e.g. change filtering, antialiasing, draw distance, shadows and so on.
3. Upgrade viewer manually or simulate forced auto-upgrade
4. Launch viewer after upgrade and check graphics preferences

Actual Results graphics preferences are reset to Recommended settings that match your videocard class
Expected Results It would be nice to preserve graphics preferences