Question : issue with robocopy marking files as 'Newer'

I'm using robocopy - actually running it as a service using iain.cx/src/nssm/ - and it's working fine with the exception that when I look in the logs I see a ton of files that are labeled 'Newer' so, presumably, this means that they are being copied as I'm using the /MIR switch.  This wouldn't be a problem except that I'm running robocopy in pretty much a continuous loop and there is no chance that all of those files are actually newer than when the process was last run - in fact, I just checked the robocopy logs and over 10,000 files were copied on the second pass and, since we only have 20 or so employees, there is no chance that is truly the case.  One other note, I'm experiencing this same result regardless of whether I'm running it as a service or manually so running as a service doesn't appear to be the cause.  That all said, the 'switches' I'm using are below:

/MIR /MON:1 /E /V /NP

Anyone have any ideas why the command is thinking so many files are 'Newer'?  Thanks in advance for any insight.

Answer : issue with robocopy marking files as 'Newer'

Yeah me too, but you've given me another thought.
I was once sending backups to a Unix storage area and found that carriage returns were being saved differently, so the file sizes were always like a few bytes out.  Are you able to compare the exact file sizes appearing on the ZFS system?  I wouldn't know how to solve it though, if that was it.