you can export tile assets that you've created, but keep in mind that for them to work once imported, you will have to have the same graphics tileset files in the same places they were when the assets were exported.
othervise they will not work correctly.
as far as i know, the entire set of palettes can also be exported instead of having to do it one by one.
it's a good practice to go though your monster and object settingns once you have imported them to the new version, there are some things that changed between the versions so your objects might be using frags that should not be there.