... The detailing was scaled to the hull of the ship with a certain ship size in mind. AFTER the detailing was done, the size of the ship was altered ...
This is only conjecture that some people have accepted as fact. You have no evidence to support this.
Well.........This picture comparison seems to support SomicRanger's theory.
Looks like IML had thought the bridge would be in it's "normal" location (along with the ship's scale), and added upper detailing to simulate the placement of the elevators - similar to the TMP Enterprise.

I think that there were definitely some mid-course changes in the size, and ILM didn't have enough time to make the substantial changes to the CG to reflect the new "super-size"
I wouldn't be the least bit surprised if all of this scaling conflicts changes/corrected in the Haynes book and next movie.
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