I have to ask the OP to describe this in a more detailed manner because I have no issues with linking occult outfits in my game.
I have a 5 options for outfits in every category for aliens and 5 options for outfits in their hidden form...?
I don't understand what you're saying....I can flip back and forth between alien style and hidden form style anytime I need.
I play on a PC with a few mods and tons of cc.
I'm talking about having the options linked so you can easily style an outfit once. For example, you should be able to apply a style to everyday in Alien form, it copies automatically to Disguise and vice versa. I've attached a screenshot below of the Linked option which you can click on or off in CAS for Werewolves (shown here), Vampires, Mermaids and Fairies.
Example - werewolf Sim has the option to link their outfits with their transformed self
