As mentioned earlier, recreating the missing entries in the .vmdk file is close to impossible, and would require forensic work, especially because the snapshots were created with the VM being powered on. In order to recreate the missing entries, one would need to associate the .vmdk files with the correct .vmsn/.vmem files.
What I did, was to at least modify the .vmsd file so that it will work for the first 90 snapshots which were listed in the file.

André