Will - Thanks for getting back ! I think I have that sorted now, it's working as advertised. I did run into one use case you might be interested in. I had a multi disc set (5 discs one MM title). The first disk had a prefix of "Disk 1" which caused it to be sorted below disc 2-5 (note the k instead of c in disc). I then changed the "Disk 1" to "Disc 1". The driver started complaining about a collision between "Disc 1" and "Disc 2". I re-saved the title. Same results. In MM, the first disc in a multi disc is usually cataloged as an "Online Folder", with the rest being "Online Files". This was the case in this instance. The only way I could get the error to go away was by changing Disc 1 to an "Online File". If you'd prefer a case to be opened let me know. I thought since MM was not a dealer tool, the in's and out's of this might be useful here.