After Upgrade from OMV2 to OMV4 (fresh install) everythings works as expected, except startup of the VMs in VirtualBox.
To move the VMs I exported and imported the aplliances for every VM, which seemed to be succesful. All VMs work and I can start them from the OMV-GUI as well as from phpVirtualbox.
But at time of booting the OMV, they don't start automatically, independently of the settings of Startup Mode.
Any idea how to fix this or to use a workaround is highly appreciated.
Of course Proxmoxx, Docker, a.s.o. would be the better concept, but as long as I am on OMV4, it would be nice to have the VM in autstart.