[TYPO3-dev] Limit fe_groups to DB Mounts

[permutation]

hi all,
im using one t3-backend to handle different domains.
there are be-users and be-groups for each domain and the be-group has 
selected its own db-mount to the pagetree of the related domain.

the fe_groups are stored in a separate sys-folder for each domain inside 
the domain-pagetree. but the fe_group field in some records (i.e. page-
access) shows all fe_groups like a global select.

is it possible to check these be-group-records against db-mounts?

kind regards

carsten