Difficult to say if you don't share the versions.
In general there are some changes from major to major version which you can't transfer easily.
You might collect the settings from the old version or just remember all the settings you need.
In this case you can write a script to set this for the new version.
If you migrate to AS7 or later I recommend to use the CLI, you can script it, as this check your settings and give you informations if there is something wrong.