This Seems To Be Another X1b Bug
I updated my instrument definition file to add new names of patches I created for my synthesizer. Sonar was closed while doing this. I started Sonar followed by closing the auto pop-up. At this point, I have no project open. I click Edit followed by Preferences... On the Preferences window, I click Instruments located under MIDI on the left pane.
All my output channels are all defined, but I wanted to re-import the updated definition file. For MIDI port 1 channel 1, I accidentally click the incorrect synthesizer. Oh -- no worries. I will just click Cancel so my changes are not committed. I click Cancel, the Preferences pop-up closes, I then click Edit followed by Preferences... again.
Guess what? My change I Canceled is still showing as in effect.