Are there certain conditions required because i edited the title of an extra, ran some library scans and it was preserved ok.
See post #12 for steps to reproduce.
I can't think of any specific conditions or requirements. It appears to be a server issue since manually editing the <plot> tag in the NFO file also get's overwritten but, just in case...
Windows 10 system
Edits are generally made using Chrome Browser.
Most server settings are default except: Saving artwork and NFO files to library folders.
Hope that helps.