Re: Season SIX OFFICIAL TNG Blu-Ray Discussion Thread
They used stock footage of the shuttle model created for the first couple seasons of TNG, but shot on the sets created from the recycled shuttle from STV:TFF that was introduced in "Darmok" in season 5. This happens again at the end of "Ship in a Bottle." It may be worse in the latter instance since they show the exteriors of two different shuttles in the shuttle bay that are intended to be the same one.
At least "Ship in a Bottle" could be explained by a holodeck malfunction.