WordPress Migration Expert Needed

I'm looking for a WordPress migration expert to move Users, Orders, and Coupons from my current site to a newly redesigned one. The new site uses different plugins, so standard migration tools like WebToffee aren't working properly — many custom meta fields in the orders table aren't transferring. I need someone with strong experience in phpMyAdmin, WordPress database structure, and especially handling meta tables from third-party plugins. The goal is to migrate everything without losing any data or custom fields. Please reply with your experience in similar WordPress database migrations.