Xiaomi.eu Rom Weekly Vs Stable

[Sergiu22044]

Can I change the ROM from Weekly to Stable without data lost?
Which is better? In Weekly the battery drain quickly.
In stable version i will have the "split screen" option and all options from Weekly?
Thanks. Sorry for my English, I'm from Republic of Moldova

 

[Sergiu22044]

Help? (

 

[Pertti Kosunen]

Weekly to stable is downgrade, need to wipe data/factory reset.