[Samba] winbind use default domain change impact on ACLs?

[Coert]

Hello all!

I have a samba server as a member of a domain with trust relationships 
to two other domains.

Samba is configured with:
winbind use default domain = yes
winbind separator = +

so the domain samba is member of does not use the seperator, but the 
other 2 domains do.

If I change this to winbind use default domain = no ,will I have to 
update all the ACLs on the filesystem to include DOMAIN+username instead 
of just username?

Kind regards,
Coert