I was on AICP. Then back to stock ZUI Twrp flashable, because of the Battery drain. Then switched to RR. No problems. The way is always the same.
Make a Backup of your Apps with Titanium Backup. Then go to Twrp Recovery and make a Factory Reset only. When changing Roms its a must. Flash the Rom of your choosing. Flash Gapps on top of it. Reboot. Thats it.
Only issues are: it doesn't appear to have JSL, the "24 hours" option seems to be missing on my Savage Blue version (try the other two), and it can sometimes quit responding if you change modes for the first time. Beyond that, this seems to be one of the higher-tier camera apps for our phone.
EDIT: Actually, the 24 hours option doesn't appear to be available on this phone; ah well, it's not like I shoot videos extensively, anyway!
I know last update for AICP on Z2 PRO was on June 03 and I'm using, but yesterday I installed the AICP Clark Version for a moto X Style (pure). And for my surprise today July 01 there's an updating for same one. Is it my mistake or AICP updatings for Z2 PRO are more time consuming than other models?
I flashed RR over AICP with only Wipe Cache and Dalvik and I crashed System UI on boot. So before the flash I thought I would uninstall the Substratum theme I had after I backup with TB, so I did not have any more crashes and so far everything was ok. I'll see now for the Battery Drain in Airplane Mode I had on AICP.
Nothing to do ... Battery Drain in Airplane Mode even with RR. Now do Flash clean with Wipe Cache, Dalvik, Data and System. Hope to solve ...
Even with Clean Flash of the RR, I though more rarely than the AICP, Battery Drain in Airplane Mode. Let's say it happens every 6-7 times that I put the phone in Offline. It's as if that time some process remains running at the time of putting in Offline. I have the feeling that it is some activity related to the presence of the internet and that, if interrupted by Airplane mode, causes the phone to miss Deep Sleep. To know what ....