Hello,
If you go to Company --> Companies --> Click the company that does not work and click set as default can you open up the report and go to the row format and see your accounts listed or do you just see a bunch of plus symbols? If you just see plus symbols that means your account framework in GP has different names for your segments. You would either have to adjust the segment name in GP, make a separate report, or use two link to financial dimension columns in the row.
Thanks!
DFC Consultants