Drag and Drop does not remove tracks

[YellowSoul]

I encountered a bug which can be reproduced as follows:

1) Create three playlists A, B, and C.
2) Add any number of tracks to playlist A.
3) Go to playlist A and select any number of tracks, rightclick and send to playlist B.
4) Now drag and drop these tracks from playlist A to playlist C. They will correctly disappear from playlist A.
5) Open any other playlist and then open playlist A again. ==> All the removed tracks have reappeared.

This might relate to http://www.ventismedia.com/mantis/view.php?id=6283

[nohitter151]

This issue was only fixed for MM version 4.