Reoccurring Problem

Well the “Alternate Account” problem happened again

I was once again signed out of my account and given an alternate account, when I logged onto my main account all my custom installations were reset, as I stated before these aren’t the real games and so i have to put the installation location in myself, I was wondering where the custom installation saves are saved so I can save the file before every update because it happened after the update my, account was switched. As a solution i can just replace the file after every update.