Best Practice Of Upgrade


my database is being upgraded since 2x so its very old and this causes more and more issues with new upgrades.

What are the other more complicated ways of transitioning to newer version?

Orders, customers can be exported / imported

What are the stuff like settings and other that cannot be exported / imported and what are the other choices to do it?

Know there is addons to export shippments..

Thanks for imput

There is no way to export/import settings.

As for shipments, 3rd party solutions can help you

Note that if you export/import orders or users, the user_id's will no longer relate unless you run additional code that will update the order user_id's based on the $order_data[email]. I think I have an old addon that will correct those order/user_id mismatches.