Trekkies will immediately be able to tell you the differences between “All Good Things…” and “Generations,” of course. The finale episode took place over three time periods and featured most of the cast in old-age makeup, as well as the return of Denise Crosby, whose character was infamously killed in the show’s first season. “Generations,” meanwhile, featured different lighting, new uniforms, and an expanded bridge set for the Enterprise-D. Regardless, to Moore and Braga, they were essentially identical projects. They were both two hours long, they both had the exact same cast, and they both employed the same Paramount sets.
It’s worth noting that “Star Trek V: The Final Frontier” and “Star Trek VI: The Undiscovered Country” also made use of the “Next Generation” sets, so the “double duty” approach wasn’t wholly new to “Star Trek.” It was the first time, though, that Moore admitted being mixed up. He said to Yahoo!:
“There were points where we literally were working and we would suddenly stop and say, ‘Wait, which one are we working on?’ Because they were both two hours, they took place in the same ship with the same characters … and every once in a while, you’d just get caught in the moment of, ‘Wait a minute, this scene with Geordi in the engine room is from which one?'”
Trekkies will hasten to point out that Geordi had several scenes in the Enterprise’s engine room in “Generations,” but didn’t have any engine room scenes in “All Good Things…,” but one can see how Moore would be mixed up.
Braga, meanwhile, was able to separate the two through story conceits.