From your post above, it appears that your Created date and Modified dates are correct, just your "Accessed" date seems messed up, correct?
For the short answer, see this SE Superuser post: The last access date is not changed even after reading the file on Windows 7
Turn off NTFS Last Access File Stamp
The NTFS file system updates the
"last access" timestamp whenever a file is opened. This time stamp
did, on some user machines, cause new or changed files to not appear
until an Explorer refresh. Try turning the Last Access stamp off: Open
up the registry and go to
Double-click on "NtfsDisableLastAccessUpdate" and set the value from
"1" to "0". Now reboot.
For more detail than you want to know, this is actually part of another bug that can cause some of your files to not appear refreshed in Windows Explorer, or even not show up at all. Because you are having this issue, you are likely going to see other issues later on, so I am linking an article to walk through all steps to other potential fixes. This article ("What to do When Windows Explorer Doesn't Refresh") states that it happens from 10-50% of file operations. We hit a point where this would randomly happen to users and a file they were just working on would not show up in their documents. The registry setting change seems to have fixed it for those who were having recurring changes. Copied the list, in case of link breakage. There are more details on how to do all of these in the linked article.
- Registry Changes - turn on the Windows desktop refresh feature.
- Sort by Name
- Re-enable User Account Control
- Turn off Third-Party Shell Extensions
- Try a Different Firewall/AV solution
- Turn off Sharing
- Rebuild the Explorer Icon Cache
- Turn off NTFS Last Access File Stamp
- Uncheck "Show Hidden Files and Folders"
- Turn off Home Groups
- Restore the Explorer Settings
- Delete Libraries
This is not, however, a GIS specific problem, but a Windows issue overall.