We have migrated from Magento 220.127.116.11 to Magento 2.3.4 but after the migration we are not able to see the Payment Method. Is there any solutions for this without breaking new orders in Magento 2.
The reason could be due to the incompatibility between your Magento 1 and Magento 2 site.
Even if the payment method is the same, it still cannot be displayed because the payment_method in table sales_payment in M1 could be different with one in M2.
Hope this can help you! Let me know if you need further assistance.
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