Is it lost/deleted? I think it should not be lost/deleted...

You are right. The credits are not delete

Then, I think it could be an interesting information to add into F.A.Q.

Wait, you mean deleting a host on BAM?
This is the actual answer needed in the FAQ: BAM and stats are unrelated!
Deleting a host on BAM causes nothing to stats, you don't need a BAM account to see your stats, and if stats aren't showing for some reason, using BAM won't make them work (maybe solution is just waiting 24 hrs).

Sorry, maybe my explanation is not really good. I'm going to try explaining clearly.

One of my hosts has been deleted because in 1 month hasn't been connected. That's OK because now I haven't that host.

My question is: what happens with the credit of that host? I say that because I have seen in my graph statistics that I lost some credit that day (I have negative credit...). That's why I asked it.

I hope that explanation is more clear. Isn't it?

OK it's clearer now. Then you posted on the wrong category since it has nothing to do with BAM.

When you get credits, they are given to your host, user and team. Deleting your host doesn't remove them from user. When you see your user credits, server doesn't sum up credits from all hosts; user and host credits are stored separately.

Then, why am I seeing negative credit (in my detailed stats) the day which I deleted the host?

Sorry for the mistake posting here that message.

There is a 1,473 credit increase the following day (more than your usual credit/day). I guess it was a split CPID or similar problem.

Ok! It's clear. Thanks!