Files Increase when sync'd by OneDrive

We’re in the process of migrating files to Sharepoint using OneDrive. I’ve noticed that the file sizes increase by about 7KB when i drop a file into OneDrive. It appears that it’s a time/date stamp or something because when I use xcopy (or GoodSync) to refresh recently changed files it thinks they’ve all changed.

Sharepoint has been changing file sizes for ages, at least as far back as 2010, probably even 2007. The team/group files will increase in size, but I’m afraid I’ve yet to see it documented why. It could be due to the database or it could be due to collaborating and versioning.

Okay, sounds good. thanks