Wrong file modification date/time on networked drives

Hi! Im getting an incorrect file modification time/date on files synced to a networked drive.
I have a mac server connected to both qnap and freenas NAS systems. When using a local folder for insync on the mac server the file modification dates are ok, but when using a networked drive some of the files get a incorrect time/date. (seems to be the current time of when they are synced to the NAS)
The right date/time is visible in google drive. Have two locations with about the same setup, and both locations have the same issue. Have tried using both AFP and SMB.

Let me tag our engineers @marte @jimperio and they will get back to you.