I bought a pair of sunglasses once that said it had a lifetime warranty. Something got on it and I forget what happened but I think when I washed it off it washed the mirrored coloring off the lenses too. I called the number and it turned out the "lifetime warranty" was for manufacturer's defects only. I was like really? Like someone's not going to notice there's a manufacturing defect in their camera until 20 years later and then is going to get it replaced? Misleading advertising IMO. Maybe yours is the same thing? Anyway yes, I have a drawer for all those important papers like warranties, receipts, user manuals, passport, etc. and other things besides papers too.