Hey Marcel,
You may use vendor account group also but you can look at using Corporate Group field under Control Data -> Account Control -> Corporate Group if it is not yet been utilized. This field can act a qualification flag for a vendor record to be exported. If this field is already utilized then you can create a custom vendor account group e.g. ZARIB and default it on all new vendors that are created if most of your vendors will qualify for export. The decision should be data driven.
Regards
Vilas