Also False
From the beginning, both USD and USS were always designed to have Revenge of the Mummy - both with track layouts virtually identical to USF
To be fair, even though USD and USS share(d) the same track layout as USF, the show for USS is pretty different than the USF version. USS isn't about riding the movie like USF is and there's a lot of things Universal improved upon. Whether or not USD was going to be the same show as USF is up in the air since it was never built, but I can guarantee the track for Dubai was not used in the Singapore version.
No offense EastCoastn7, but I'm listening the guy that worked at Universal and has first hand knowledge of the situation, in this case CoasterFEV.
Hey no worries but now I'm curious, does this mean the story for Dubai Mummy was that of Orlando? Essentially a clone? Was it a one of kind that was never built? Please I'd love to know more, the Mummy is one of my all time favorites!