But now it brings up an even bigger question. If they still had the bridge from the original films, and it was in good working order, than why did they go to the trouble of building a brand new bridge for TFF? Especially since money was a big issue for that film.
Perhaps because TNG was using the original bridge set as its battle bridge and various other sets such as the Stargazer
bridge, the science lab, and so forth. So it may not have been available for TFF.