I have recently been trying to put AMS (Advanced Message System, or something like that) into my game. I am using the same script that is featured at phanxgames.com. I can't use any gamesaves that were made before I put the AMS script in, but ones that were saved afterward worked fine. I've looked at the script, and see where it wouldn't work, but I want to know if I can change the save file or script or something to make the pre-AMS saves work.
I'm not sure if this should go with scripts or troubleshooting, sorry if i'm wrong.
Sorry, can't help you there. I would just use the new files. For testing out a new map, I just move the starting position to the new map. I don't use saving for testing, instead, I replay every time(though I only do this after I finish say, 5 new maps and want to see if the teeport works or what not)