Not sure if I should leave this with AA or quark, but when trying to use the chest to crate upgrade on a non oak chest (i.e spruce or birchwood) nothing happens.

I assume as it's actually additions doing the conversion it's worth reporting here, if that's wrong let me know and I'll raise it as an issue with quark.

Since Ironchest's Wood>Iron upgrade works with quark, I would assume the issue is on AA's side.