Since no one has replied, I think I may not have been as clear as I had hoped. Perhaps two screenshots will help clarify the problem. I set hotkeys for the various node categories on my launchbar. For example, CTL+Win+M will open the node showing my MS Office apps. It normally looks like this:

I've also set a hotkey (CTL+Win+C) for the node for Control Panel apps (that node came with my copy of LaunchBar Commander). However, if I use this hotkey to open the list of Control Panel apps, the next time I use any other hotkey, the Control Panel apps listing will be attached at the end. For example, the next time I try to bring up my MS Office apps, the listing looks like this:

(I hope the images will show up--they don't in my preview screen

. Also, I've cropped the second image to make it small enough to show up full size. The actual listing includes all the Control Panel apps, not just those starting with A.)
This happens with all the hot key listings: once I've used the Control Panel hotkey, all others will include all the Control Panel apps. The only way I'm able to correct this is to shut down LaunchBar Commander and then restart it.