How to keep RTTY settings when changing bands

Sorry if this has been answered but could not find a reference. So I have downloaded MMTTY and all is working well on 40. And I have all the settings saved in a Global Profile. I move to 20 and my 6600 reverts to SSB which was the last mode I had operated on 20. I think this is due to Percistance. But I want the radio to remain on my RTTY settings when I change bands. Is there a way to do this or do I have to reset all my RTTY settings on 20 and save another profile for each band? I many not be remembered correctly but when I was using HRD, not using HRD rig control, I could move to any band and not lose the last mode I was operating. Thanks for any inputs.