A little tip. Anytime the Art Director says "The image looks fuzzy" and it's set on lossless, or says "The text is jumping a bit" and it's just a straight tween, or says "it's not quite centred" and it looks fine in the IDE.... it's probably because the MovieClip is sitting on a half pixel. Click all the way into the deepest portion of the MovieClip, check your info panel, and make sure your x and y values do not have a decimal. Then go back into the parent clip, and make sure it is also on a full pixel. Go all the way back to the stage, making sure each item along the way is on a full pixel. That should fix you up.
I have yet to find a fix for this, but seemingly without reason, sometimes when I open an FLA file, I find that a few jpgs that were previously imported and then updated with another file, have reverted back to the original imported state.
If anyone else has had this happen, or has a fix, please let me know. I cannot find another instance of someone else experiencing this online, so it would be good to know I'm not the only one.