Wow, that's a far cry from the way it looks when it's new huh? I didn't know the poly batting would do that! I don't use it anymore because it keeps getting thinner and thinner (not as it's used, I'm talking about new). Now I'm wondering how all those early quilts of mine are holding up. They were mostly all hand quilted but I hope the recipients of them are not having this issue! I'm wondering how worried I should be?
I think I would redo it (now that you have it apart already) with a reliable batting if the top is in good shape. Good luck!