Default Apps disappear afyer reboot.

I everyone, first I apologize if this is a repeated question.
I have a D802 and running CloudyG3 1.2 for a while, I wated to shift to AOSP roms, Backuped my apps using Ease Backup.
Every time I restore the apps, after the reboot, alot of the apps disappear and cannot be reinstalled. Tried Titanium Backup, Go Backup, Helium. The same problem occures.
Any help please.
Always Nandroid Before doing risky mods to the system