Hi
Yes, it definitely can be done. But you may have to do it manually.
You need to do a search and replace the interface configurations respectively eg:
NS208 - ethernet1 SSG500 - ethernet0/0
So just need to search and replace the interfaces accordingly. The text replace will do it for everything linked to interfaces so you should be fine(vpns, routes etc).
Just need to check that the routes are correct in case you have changed the ISP gateway anything like that.