Cubase 7.5 Changing Output settings keeps old ones listed

Just installed 7.5, opened a 7.06 created project, changed output settings in Devices- Vst Connections -Outputs

All channels stop playing, and in the output list under Routing the old connections ( some mono and 2 stereo out) are still there.
Had to try several times and reconnect all channels to new outputs. The list keeps the old settings PLUS the new ones.
I use the control room so no audio is routed to the main OUT.

Hope there’s a solution for this

Roberto Priori

Cubase 7.5/Win 64bit/i7-8Gb ram RME Raydat.