For LineageOS they say WIPE SYSTEM, here in Xiaomi.EU you say DON'T WIPE SYSTEM, so... If I want to go/come from other roms here because I like to switch ROM(s) on my Redmi 4X like I was doing with Redmi Note 1W. What am I doing now? Wipe System or Not, LineageOS says yes, Xiaomi.EU says no...