Music Player Daemon

I'm testing to control mpd by python-mpd2 library. I've two mpd servers (both Raspberry Pi 3). At one server the current playlist entry is deleted if I used the MDPClient.next() function at the other server this does not happen. If I look with NCMPC at the servers I can see a small letter 'c' top right at the first server, at the other server there is a 'r'. Is it the reason? And how can I delete/change the 'c'?

That's consume mode. Toggle with "C" in ncmpc or with "mpc consume".

@max Thx! That's it!