Thanks for your patience!
Based on your descriptions, I would like to firstly check a few things for you:
1) "the files do not appear to be merged when the backup process completes" ——
Since you have already removed your checkpoints from the GUI for the server in Hyper-V Manager, how did you know the files were not merged into vhd files? When you delete your avhd files successfully, they should automatically be merged into their original files.
2) "In the shared storage folder the snapshot files still exist and are not removed." ——
Can you give me some screenshots for this issue? I can only suppose that you may backup your avhd files in your shared storage, they do not necessarily need removing since they should not influence your original avhd files and their vhd files.
3) Try to check the locations that I showed you last time, to see if any avhd files remain with their vhd files.
Thanks for your understanding and support!
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