Can I preserve order IDs whilst migrating to WooCommerce?
Yes, Cart2Cart service allows merchants to preserve order IDs while migrating to or from WooCommerce stores. However, in order to do that, users will have to choose the Preserve order IDs on the Target Store option on the appropriate Migration Wizard step. Note,this function is only available if you install the free WooCommerce Sequential Order Number module.
Keep in mind that after the transfer each of your order IDs will be given a unique order number additionally, to avoid any conflicts between post’s IDs on WooCommerce store. This number will be visible to you in WooCommerce admin panel, and won’t affect your system order ID, that’s included in order’s URL.
Note, if you forgot to install the module before the data import but have chosen the option while launching the migration, you can install the plugin afterward and get the order IDs preserved.