From what i understand, all the text that was removed or scenes that were killed, the actual text wasn't, so instead of killing the entire area, they simply killed the promts for the areas either to conserve space or they wanted to get the final thing out more quickly, such as making Biggs not move from his spot could potentially save dozens lines of coding and several hours of programming, but if we were to find what commands initiated it, we could re-insert the said event into the game, although recreating the said prompts instead of deleting them would take much, much longer.
(at present i am merely trying to get a more 'proper' Nibelheilm flashback to develop my 'meteor' abilities, zack instead of cloud, different lines, MP sitting down and that follows being cloud, but whenever i tried the game simply crashed when i got to the flashback area)