Currently you cannot transmog the Solstice 2022 armor set separate from the glows. Either you do not make your candescent armor glow and unlock the regular armor for transmog, thus leaving you unable to unlock the glowing armor for transmog or you unlock the glowing armor and are then left unable to unlock the regular (non-glowing) candescent armor for transmog. I don’t know if this is intentional or a bug, but either way I’d like it fixed as I like the designs for the armor this year and want to be able to use it in more sets without the glows.