Using ADManager Plus, I imported groups into an OU, so far so good.

Now I created a second csv, with the format: givenName,samAccountName,memberOf. No matter how I try to import this, I get an error. Tried Modify Users and Modify groups. The error I am receiving is:

Error In Acessing the group,An invalid dn syntax has been specified - Error Code : 80072032

What am I doing wrong here? The same error appears when I am trying to nest groups with an import file, so something must be wrong in my approach I guess. Example csv:

givenName,samAccountName,memberOf
BIGGIOM,BIGGIOM,GRP_Accounting_italie

The groups are placed inside their own OU, 2 levels under the domain, so they look like: domain/OU1/OU2/groupname. Do I have to put the OU's in my import maybe?

Thanks for helping out!