The Acrobat XI version before Acrobat XI Pro 2017 let the user export the current settings to a standard *.aaui file. That way, one could alter between preferences or GO BACK if a change was not working as needed/expected. It also allowed for exchange of settings between users if User B preferred concept used by User A ....

For the life of me I cannot understand why I found this previous request to be 'DECLINED' :

Declined by digvijay singh bisht (Software Engineer, Adobe) responded

Save Quick Tools settings
There also needs to be a way to save customize Quick Tools settings. If I rest the toolbars, I then have to manually set up quick tools again when I want to go back to a certain arrangment. They should work like workspaces do in the other Adobe program