Hi Larry,
Adaptable has an "import / export settings" page in the admin section designed for this scenario.
There will be differences between 3.4 and 3.7 so some clean up will be required but it will never the less be quicker than doing them individually.
I would suggest you dump your existing 3.7 settings and save those as a text file before importing the 3.4 settings, that way if it all goes horribly wrong you can get back to your working settings within a few seconds.