Thanks for the advice. Am actually quite familiar with WhatsApp.
There is an internal (really "internal" database, not sure where, need to look, but another one then the folder with the seven backups ) database.
And the usual remove/restore did not work. The only thing that worked was app only in on titanium. Not app+data.
Just app only.
And it happened again after a fixed WA the first one time, reflashed rom, again WA got scrapped.
Tomorrow after the internal 4'o clock backup (the hidden one), I'll create a normal backup (the folder one) and reflash the rom. See what happens then.
I like the installer, not sure what all means, but I'll google it. I like that I don't have to install email app. Personally I still remove the browser. (Using CM Browser instead... Cheetah I mean)
It still can very well be my settings/setup etc... But I thought it was worth mentioning. I do not expect a sollution, maybe when it happens to others, and as I see it now....
Otherwise, I''l just revert. No biggie.