[Observium] Observium CE / rename device, it disappears from "Servers" view

Hi

Command used :

/opt/observium/rename_device.php azimuth3 srvbggwer004

Host azimuth3 renamed to srvbggwer004

I see the server under Devices | All devices, but it disappears from "Servers".

Also naming back to "azimuth3" doesn't solve.

Is there a database hack to place the host in the right category ?

Observium CE 0.15.6.6430

best regards, Sala