Is it possible to export a drag and drop dashboard from one FMS then Import onto another
Yes this is possible. Fom the command line export with fglcmd -cmd util:uiexport. From the command line on the other FMS, import with fglcmd -cmd util:uiimport.
The main considerations would be if you have dragged topology objects directly onto the dashboard rather than using them as an input, then on the new FMS it won’t work - as the unique ID of the topology objects will be different.