Tell me what I did 'cause I don't want to ruin my stash for new bub!

I have 2 Haute Pockets that the PUL lamination has come off from the outside fabric. Not sure how old they are - 2 years maybe, washed twice a week maybe. Occasionally had a hot wash - would that have caused it or is it just that they're too old?

DS was wearing them to bed, but I'll just have to wash my 2 Bum Genius' every second day - don't want to break into the stash for the new bub ('cause its at my parent's place & all the OSFM's are at the bottom of the bag & we're moving in 3 weeks)

Thanks in advance.