I did a little project for a client in which I produced 3 slightly different versions of the same flash file. She pointed out to me (and I'm not sure I would have noticed otherwise) that the file sizes for the FLAs were progressively larger. The files are identical with the exception that they each use a slightly different png file. The size of the pngs do not account for the change in file size.
This is not an urgent issue but if anyone knows why this is happening, I'd appreciate your insight.
Have you tried using Save and Compact? An fla will retain memories of days gone by which you can usually erase by using that. I am assuming you only have one image in the library of each file (or all three images in all three files).
Once again you have pointed me in the right direction.
CS5 doesn't have save and compact but I found a work around that I will try here:
So what I learned is that as CS5 doesn't have a save and compact option you can reduce file size by saving it back to CS4 and you even receive a message that the swf history will be deleted.