[fabio90mm]

Hi. I've a problem with Kodi.
When I overwrite a movie already scanned in library (with same name) the entries are duplicate. I've launched Library cleanup, but not solved.
I've removed the entire movies, launch again libray cleanup, but the entries remain. 
This problem happen to me on different machine. 
See https://postimg.org/image/m2im7o9z7/
How solve this? 

Kodi 17.6 Windows 10 x64

Thanks for help

[Klojum]

Somewhere in the full path to your movies, there must be a difference.
NFS vs SMB, a new location, a space in folder/file names... Something is off.

Double-check in the Information page of those movies and compare them.