Like I said before, I never use Fouad version, but I think if you make a backup of all conversations in definitions, it work to all versions.
Sent from my using XDA-Developers Legacy app
Tried, it imports the chat backup but not the media,...
I tried to install the original version of GbWhatsapp and, as someone said above, the media gets busted. I recommend waiting for the Hassan update Has.007, hoping to have time to release it as soon as possible.