Okay, considering this additional information:
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Run macro Option 2a one or more times. Each time it is used, it will save the modification dates for each selected file(s). If all of the files are in one folder, then you can select them all, and run Option 2a once. If they are located in multiple folders, then you'll probably want to run Option 2a for each folder (with the files in each folder selected).
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Complete your manual steps.
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Run Option 2b (using the same approach used for Option 2a).
As it's currently designed, when Option 2b restores the modification date for the selected file(s), those saved modification dates are purged from the list of saved modification dates.
It would be a trivial change to retain those saved modification date(s) and only update the saved modification date(s) if Option 2a is run again for the file(s).
Note that the modification dates are saved into a dictionary. If you want to inspect the dictionary as you use Option 2a and Option 2b, then I suggest you download and use the excellent macro created and shared by @DanThomas: Variable Inspector Prompt and Dictionary Editor
Feel free to reach out if you have any questions.