On a harddisc E:\, I had a folder of copies of dvds (including VIDEO_TS folder, ifo files, vob files, etc).
I had set JRiver to watch this folder.
Since I have many harddiscs, there was confusion between them, Windows assigning them sometimes the same letter.
So I renamed the drive as M:\ (in drive management).
Then within JRiver:
1) I "moved the movies", asking JRiver to rename folders and files starting with E:\ as starting with M:\.
JRiver recognizes that the movies are present on the drive.
2) I removed the following of drive E:\ by JRiver, and asked JRiver to follow M:\.
Now, when in JRiver I look at the files corresponding to M:\, I see that it has duplicated the movies: each movie now has two entries.
I did delete the redundant entries by hand. But JRiver has recreated some entries I deleted, so that some movies again have two entries.
So what can I do to solve this problem and have only one stable entry for each movie?
NB: I also tried this, but it didn't solve the problem:
I deleted all the movies from the library. Then reimported them (since they each have their sidecar).