Transmog not showing up in collecitons after using Renascent Dream

So, it may just be me being an idiot, but I gotta ask. Has anyone else had an issue where they don’t get the transmog in their collections when using a Renascent Dream? I am trying to complete my set for the Molten Vanguard Mortarplate set (Normal mode in Amirdrassil). I have been playing a lot of PVP and not so much PVE so this way of unlocking sets is a god send for me. I tried to use my chest piece (Verdant Gladiators Plate Chestguard) and turn it into the Molten Vanguards Plackart. They are almost the same armor, just different colorway. Is there something I’m missing about using glad gear to make the tier set for Amirdrassil? Because even after multiple restarts, logouts and re-logins it still wont show up in my collections even though I am currently wearing the armor piece.

Thanks