I started making a watch tower, 2 medium tents and a barrel near the police station in Berezino logged out for 6 hours and it was still there when I logged back in. Other players had dropped off stuff too. I continued building until 1:00am CET when the server went down. It was on the hour so could have been a scheduled restart after 8 hours uptime as it seemed to be on the hour?.

When it came back up all the persistent objects were wiped.

Perhaps the restart on the experimental servers isn't doing a graceful shutdown?

If so can the restart script be fixed?