Sorry, I misread your email - yes GAS is up to date.
RB doesn't actually look at GAS, the AirNav server queries the GAS database, then RB gets its information from the server. This prevents hundreds of RB's looking at the GAS server and causing an overload.
I think that the problem is that if RB finds an already populated aircraft record in its database, then it doesn't update it just in case you have made a manual change. I can't see how else this could be made to work. If GAS hadn't been updated and you put the new details into the RB database manually, you wouldn't want the AirNav Server to then overwrite your manual edit.