I stumbled into a problem importing a few machines that had previously been deleted from Hyper-V. All the files and configurations were still available.

Running the “Import Virtual Machine” wizard did not find any machines to import, so I wrote a few lines to import the machines via powershell:

…which resulted in an error when trying to import one of the machines:

I had to get more information:

Virtual Disks missing. I verified that the files were present and that the paths were correct in the .xml file. This is a disk-intensive machine and therefor the vhd-files(disks) are distributed to 3 different physical harddrives.

It seems to be assumed, that the images are present on the same volume. After moving all the images to the same location both the wizard and Import-VM worked.