why new entries in Video Library like "310 to yuma (2/2)"?

Mezzmo 4.0.1.0

After updating the program and using "Add/Scan Drive/Folder for Media Files...", I now see entries in my Library/Video list like "<title> (m/n)" (all lower case), for example, "iron man 3 (2/2)". Why is this? Can this clutter be reduced?

Seemingly about 68 of 330 total entries in the right pane were added.

"<title> (1/2)", "<title> (2/2)", etc. are the video titles that Mezzmo has found on your ripped Blu-rays, DVDs and ISOs. When multiple titles are found on a ripped Blu-ray, DVD or ISO, then this (m/n) suffix is added to uniquely identify each of the multiple video titles.