We've noticed recently that several of our workstations (around 25) aren't
showing a monitor in the database. They all used to, and in fact we see
around 25 Dell E551 monitors all assigned to Lost And Found. Why isn't the
collector seeing those monitors anymore?

What's worse is if we try to manually reassign those monitors back to the
workstations they're attached to, during the next collection cycle they're
put back in Lost and Found.

Any ideas on how we can resolve this?