SCSM Users management

1. I noticed that disabled users from AD still exist in the SCSM config users list, thus they are still searchable from the portal. Is there a connector setting or way to "delete" terminated users in the CMBD?

We have a big AD connector that pulls all users in, but I suppose it doesn't "read" termed users and delete them from the CMDB.

2. If I manually create a user in SCSM config, is that ok? Will the AD connector be affected in any way? (in other words users can be created via AD pull or manually?)