[BlueOnyx:24546] Roundcube contacts lost

[Robert Fitzpatrick]

I migrated a site from a 5106R to 5209R server last week. The users use 
Roundcube. I exported the contacts for several users and imported into 
the new Roundcube 1.4.3 on the new server, all went well.

All of sudden this morning, the users contacts that were imported are 
all gone. Any idea what could cause this and how I can restore from our 
nightly backup?

-- 
Robert