Does ROBOCOPY /XN exclude files that are newer in the SOURCE or files that are newer in the destination?
I checked Microsoft official documentation but it is totally ambiguous.
It appears that the Robocopy
/XN switch excludes files that are newer in the source from being copied to the destination directory. So if there is a newer file in the source folder than what is in the destination folder and you use the
/XN parameter, then the file(s) will not be copied to the destination folder—I tested and confirmed that this is the case by simply testing it from a test folder with older and newer files of the same file name so that's how I confirmed.
/XN :: eXclude Newer files.