Mermaid wearing weird clothes when changing while nude

I know the mod you speak of to reset the bathing outfit, I have it already cuz as I said, not my first rodeo in this department. Par for the course when it comes to CC. But I wasn't sure if just resetting this character would reset her mermaid form as well or is it listed as a separate character. I will try it and see what happens, but my fear is, how do I put this easily...I've created a LOT of custom outfits for a LOT of my sims, I mean I downloaded them and then put them on everyone, I literally went into manage worlds and went through dozens of the NPC's and created 40 unique outfits for every one. Removing all mods and then saving will of course reset all that hard work which seems more problematic than just dealing with a silly coat in the bath so bear with me while I test my options or if you have a solution to exclusively focus on her without affecting the rest of my game, that would be great. Like how can I separate her from the world and then put her back without messing everything else up? I only say this cuz I had a recent issue and tried resetting the game before finding a better solution, and found myself in a spot of bother trying to get everything back up and working when I reloaded the sims into the same house both pulled from the gallery backups, only to find all the money in the vault gone, all inventories cleared, upgrades all reset, rocket missing, etc. etc. and so I found the game to be MORE of a problem than when it was broken because my sims couldn't even pay their bills as their money was reset to $25,000 instead of the $5mil I had amassed. TL:DR...starting over sucks and I'd like to avoid that but I still haven't learned all the tricks to this game as I just started playing last month so don't fully know my options. (though I've been a avid simmer since Sims 2...just late to the game on this one. Times are tough, and when it was free was my first chance to afford it...haha.)

I also don't use MCCC. I generally try to steer clear of too many Script level mods, and try to stick to only surface level stuff like outfits and textures, but for the most part try to avoid anything that changes gameplay unless I have to have it to balance Mod problems (such as the Reset Bathing Outfit mod). Normally I'd have this cleaned up in no time, but where it threw me off is being that it's the occult form with the problem while the human form is fine and I don't know if they're listed under different code, and also that the outfit in question appears to be standard non-CC so that I can't just remove that one item to fix the problem. 

Also per my second post I found another thread on that topic already.