Is there a way to delete all the units on the map and start over? Because once again it did not work with the renamed folder?
Func’s response answers your question directly (and it is accurate), but the reason it did not work is because each .AAM file will only open with the module that has the same-named .GIM directory as the one that was used to create the .AAM. In other words, the name of your module’s directory is tied to each save file you create using your module. The reason for this (presumably) is so that you can open any saved-game file from the file dialog window (File > Open) and it will open in the correct module, regardless of what module is open at the time. Does that make sense?
For more info, see my tutorial. I’m pretty sure I wrote about this somewhere in there (best bet is to check the section on Start.AAM, or just do a search in the PDF).