Family Lot glitch

[kindaen]

Hi everybody,

I'm new to the sims and I have all the expansions except apartment life, but I have a small glitch I would love to get some help on.

I've been designing a very large mansion/castle complete with lots of furniture and gravestones, but i've got a small glitch.

While "creating" the gravestones with random sims, one of them didnt quite die right.

In the neighborhood screen, the lot shows a Sim owns it and is living there but when I enter the lot, it shows no sims and just lets me edit the lot.

Any ideas on how to remove this sim without removing ALL the furniture with the Move-Out Family option.

Any insight would be great.
Thanks!