If you migrate products with custom options to WooCommerce, the custom options will be converted to variations in WooCommerce by default. This conversion is limited to the following option types: drop-down, check-box, select box, radio button.
If your products have more than 4 custom options or some kinds of options are not in the supported list above, you can consider using this Product Custom Options plugin for your WooCommerce store. The plugin supports a wide range of option types including: check-box, radio button, select box, swatches, textarea, input box, upload, date, range picker, color picker, product elements and more.
If you choose to use the Product Custom Options plugin, please submit a ticket from your Account Dashboard. Our technicians will check the ticket and customize the migration tool accordingly.