I've written a script to migrate data from my old shop to a new one. I'm using a modified 2.2RC1 database with some custom fields and More Pics addon, so I've added a way to create new fields in the 2.3.4 database (search for add_custom_field in the code) and adding extra images to the product_images table (just uncomment // mopics_import(); line).
You will need to fill data from your database servers at the top of the file. It takes 20 seconds to load on my databases, so maybe if the databa