It’s not a Windows 10 thing. A chkdsk + reboot prior to uploading is something I’ve been advocating hereabouts since Win95. It’s just good file system health management. It’s an easy and painless way to eliminate one avenue of problems for capture / deployment whether you’re mastering on virtual or physical.
On Windows 7- you’d property the partition and schedule a chkdsk at next reboot.
For Windows 8+ you CMD: chkdsk
/offlinescanandfix
PartClone and Windows are both a bit twitchy about that. Especially when WinPXE booting to access the partition/drive. Adding files from a WinPXE can seriously fubar and ultimately poison the file system and OS if you’re not careful.
If you never encountered this before, you were lucky.