Moved from stable to test

Hi, few days ago I decided to change my system from amd64 to ~amd64, and for some wrong choices starting a kind of nightmare (last 2 days).

After updated over 300 files and libraries, all looks fine but 2 days ago after the first --sync, now I have updates with no end and no errors.

My system is completely accessible and is working, so I can have any kind of logs, infos and whatever needs to help to solve, but right now I'm on a dead end road, and I'm not sure what I need to do and in which order.

I'm on a gentoo machine, and here my --info https://bpa.st/VTVA

Thanks in advance to any help