What a speedy response! In my experience it’s been rare to deal with plugin authors this responsive and helpful, so massive kudos to you guys!

Trying to move existing orders into WooCommerce was a real challenge. We chose CSV Import, CSV Export, and Sequential Order Numbers Pro to merge orders with new orders from the live site. The plugins worked great…I would highly recommend these products for anyone needing to move or merge orders involving a WooCommerce site.