How Do I Move Photos to a NAS Without Losing the Dates?
Copying to network storage is where file dates get rewritten. Here is how to keep what matters.
Copying over a network almost always resets the file's created and modified dates to the moment of the copy. That is normal, and it is why the date inside the photo is the one worth caring about.
If the capture date is written into the file, it survives any copy, any drive and any operating system. If it is not, you are relying on file dates that the next copy will destroy again.
Fix the dates before you move. Takeout JSON Metadata Fixer writes them into the files, so the library is correct on the NAS and stays correct through every future move. Free for your first 500 photos.