Lost skin from Transmutation stone
I don’t know about your original issue. You said you transmuted with a stone (crystal, I guess). The skin previously skinned item to the stats of an ascended weapon. This should’ve worked imo.
But then you tried to split a skin. A transmutation splitter grants you the two original weapons/ armors, but a skin is neither of those. Transmutation splitters don’t work with “skin items”. That’s what I heard …
Right. He got the sythe skin Halloween- lucky out of a box. He had been using the weapon skin already on an exotic. After he completed crafting the ascended item he took the transmutation crystal (sorry about that). The scythe skin did not override the ascended skin. So he then tried to use a transmutation splitter but it only gave back the ascended staff and his sigil. The scythe skin (and the exotic it was on) completely disappeared!
I told him to open a ticket, which he did, and all we got was a generic response that they cannot restore items. This is an item lost from a defective gem store item though- a mistake from a bug. I would hope that customer service would at least take the time to look at his account to see if it was an issue on their end before giving a copy/paste response