You might be conflicting in the other files associated with the dat. When you re-mapped the IDs in the dat file, did you also do the same with the sim, dsd, val, etc. files? What I do (not to say it is correct or anything like that) is to open the dat file, and then click on the upper-right buttons to open all the associated files (they do have to be in the same directory / folder). Start with the dat file (my habit) and use Tools - Remap id's... and use the "Random" button first, then the OK button. On each of the other associated files, do NOT use Random, only the "OK" button. Be sure and save all of the files. This is all done in a "mod" folder I made, so as to not ruin the game files... Anyway, the use of the "Random" button on the dat file creates an off-set address that all the other files in that group then use, which will maintain the links. If you happen to alter another file set's IDs, that will use that same off-set, so be aware of that... If did happen to only change the dat file's IDs, then none of your other files are properly linked to it anymore. Sorry for the posting here if you already know all of that...
