Not sure if this works for all apparel-saving related problems, BUT I discovered today that if a site apparel item is in the first slot, the wolf will save just fine! These are all imgur links, not the wolf code.
This is how my wolf was dressed at first:
And this is how she saved:
She is missing THREE of her CAs... I was irritated about why some saved and not others. I played around with the layering and it turns out that the common denominator is that all the unsaved CAs were before a site apparel item in the list. Sooooooo, I ended up doing this:
And she downloaded just fine and beautifully like so! The earrings are hidden because she is a maximalist queen, but I am thankful to have found a workaround that may work for my other wolves too. :D I hope this helps someone!