A. Once you've installed and imported the CodePlex Hyper-V module referenced in FAQ "Q. Is there a PowerShell set of cmdlets for Hyper-V outside of using SCVMM? (LINK)," an exported VM can easily be imported using the Import-VM cmdlet. In the command below, I reuse the existing IDs in the file and wait for the import to complete before returning to the PowerShell prompt.
Import-VM -path E:\virtuals\PXETest -ReuseIDs -Wait