When attempting to save a set with an artifact weapon appearance (I am not using the legion artifact tab) The weapon appearance doesn't save and is gone after logging out and back in.

I am not 100% sure but it seems this may be due to the many appearances having the same name. I do not know if this works the same when choosing the appearance from the legion artifact tab as I was using an appearance for a different spec than my own.

Artifact skins are not saved due to code on Blizzard's end that ignores those skins when saving an appearance.

Closing as it appears the 9.1 upadate allows for saving artifacts in mogs now.