[2023] Can we please convert keys we can't use?

I have 4 extra Legacy Apparel Cache keys that I can't use due to already having all items unlocked from that event. I've seen that with the current Apparel event I was able to convert my keys into the Standard Apparel Cache keys and then convert them into Textiles (since I already have all items). There is currently no way for me to do that on my Legacy Apparel Cache keys.

Also it would be nice to have a option in the Settings menu to clear all "!" symbols until a new item is collected. This triggers my OCD with no way to get rid of the "!" symbols.