Ideas
If I place a cemetery lot and then replace the lot with a residential lot, it will still load as a cemetery after I move in a family. I've run into this bug twice. Once in Ravenwood on the Hay Hill Landing lot and once in Newcrest on the Civic Cliffs lot.
To replicate:
Step 1: Place cemetery lot
Step 2: Replace with residential lot. Make sure it is set as residental.
Step 3: Move in family
When loading into the lot there will be NPC sims and a cemetery caretaker loaded in. The lot will be set as a cemetery even though a family lives there. When going back to Manage Worlds the only option for the lot is to "sell business". Then you can go into build mode and reset the lot to residential. The family will still be living there.
do you replace it with a lot from the gallery or bulldoze, change lot type and build something ?
There's lots of issues with lot types from the gallery. Not sure if we have a thread for this one specifically. Will need to do some searching after patch stuff.
Please also make sure to add info about mod usage to your post.