Sim Does Not Show Up IN-GAME
As described in the title, my Sim does not show up at all in-game.
To preface, I created this Sim about a year ago and had actively played with it for a few months. After redownloading TS4 and returning to my save today, this Sim had mysteriously vanished. I had an older copy of the Sim saved to the Gallery, so I attempted to move it back into my world. However, in CAS, the name would always disappear, despite restarting my game a few times and using an older instance of the Sim saved to my gallery. When merging households with this Sim and an existing Sim in the game, its name would be changed to that of the existing Sim's. After trying to load the household, the Sim would vanish both in-game and from CAS. I've tried this with mods disabled, mods enabled, certain mods removed, etc., to no avail.
When using the Sims 4 Mod Manager game file scan feature, this Sim is shown as present in my active household, but is missing in-game. It doesn't show up in the relationships tab for any of my other Sims in-game, and I have tried this across a few different game saves now (i.e., live mode treats this Sim as if it does not exist.) When in live mode with JUST this Sim in the household, the icon in the lefthand corner is completely missing. I can't even copy its appearance to a new Sim with MCC because it vanishes from the save after initially moving it into a lot.
Any ideas on what could be going on here? I have not encountered this issue with any of my other Sims. Apologies if this is worded confusingly. Thank you.