Wall openings can only be modeled in RAM Structural System in Lateral walls.

If you want to export walls with openings from Revit Structure for use in RAM Structural System you need to set the “Structural Usage” to Structural combined. The other options will cause the wall to import into RAM as gravity walls.

Structural Synchronizer CONNECT Edition v.10.00.00.05 will convert the gravity walls to lateral walls so that the openings import.