I updated to the latest beta version of Lansweeper last week. All of the new features are nice, but every time that it finishes scanning, it deletes the whole database and only a few computers show up. I then have to do a full rescan which can take several hours to do.
Please see the known issues for the beta. For now you have to uncheck: - Remove Computers disabled in Active Directory from the Lansweeper database. - Set computers to non-active if disabled in Active Directory.