Dave Smith Instruments SYNTHESIZERS

I thought I knew this little blue monster pretty well, but I'm at a loss here. I just made the best wub-wub bass patch I've ever made, but as soon as I switch to that patch the last note I played on the previous patch plays, and the last note that I play on that patch continues until I switch patches. Any ideas? The patch I started with was bank 4, patch 125.

Thanks,

Danny