When I move my Sims from house to house with graves on their inventories (no haunted houses) and arrive at the new house they get a double of that gravestone. I sent one of each to the local graveyard but what can I do with the others? Can I delete them? And is this normal?

When you say that they have a double of the gravestones, what do you mean? Do you mean that there are gravestones on the ground with the dead sim's names and graves in inventory that just say "Rest In Peace"? If so, I had that happen to me earlier this year. What Peni Griffin told me is that that's normal and safe and you can delete the graves in inventory -- the ones on the ground with names are the real ones.

If that's not what you mean, then can you give a little more detail?

Ill see how they are and give some more detail

One set will have the name of the dead on it the other set will not and the set without the name on it can be deleted.

I would not put graves in inventory. This strikes me as a very bad idea.

@simsfreq If you want to keep graves when you move your Sims to a new house this is what you have to do.

There is nothing wrong with moving graves via inventory except if the sim dies. If you are moving house or just having an undertaker pick up the urns they are unlikely to die. Also since we should all have No Corrupt Death and No Unlink on Delete there is very little risk involved.