Copying DEVONnote to DEVONthink

I have been evaluating DEVONnote and I like it a lot.  In fact I decided to try out DEVONthink because I think I will get it instead (Pro when available).  I have a lot of stuff added to DEVONnote already and I wanted to copy the database over to DEVONthink.  However, I have not found an easy way to do this.  Is there a trick to make this a simple process?  The drag and drop between the programs does not work with groups.

Export from DN, then import to DT.  See Import from DT to DevonNOTE for more discussion about this topic.