How to export config Dude beta 3-4 to beta 14?
make a copy of “data” folder
try upgrade to last version
after upgrade, overwrite “data” folder with the “data” from backup
or try some versions from beta7 to beta9
i did it version on by one starting from beta3 and my map is still alive 
good luck!
Short answer: you cannot.
All you can do is backup you current config ( C:\Program Files\Dude\data
directory or whatever your install path is) and try to install over current
version without resetting config, however there is no guarantee that dude
server will work.