Assign users to group via import

Hi all,

EP60 SP2 P4 HF8, Datasource is Database

Is there any way to assign users to groups via the import script? Adding them to roles is not a problem, but we use the group to role assignent and not users to role. There seems to be no specific field for it.

In the UMESTRINGS I can see that a group assignement is a seperate PID.

Thanks in advance

Marcel