Tried to do an in place upgrade of Windows Server 2008R2 to Windows Server 2012 Standard. Upgrade of OS worked, but postgresql db (3CX DB) is missing from services registration and the 3CX config service dependency lists it as having been deleted. (Although all files seem to be there). 3CX v11 SP4 not quite 2012 compatible... Reverting to snapshot. I'll contact support to see if there is a workaround.