I think I would mount the image in question and check if the files are there. You can do that in Disk Management by attaching a VHD and browsing for the largest .vhdx file which is described as a Hard Disk Image File. After mounting you will probably need to assign a drive letter. ** when you are done, make very sure you use the "Detatch VHD" option on the left end of the Disk Management line to dismount the image.
If the files are present, then for some reason it wasn't reimaged fully. If the files aren't there then they may not have been on one of the Critical partitions and were not part of the image at all.