Your original return will be process as filed. You should not amend until you receive the refund from the first return because if the IRS changes it then the amended return will be incorrect.
A amended return is just the difference and is paid separately. Amended returns are currently taking about 6 months to process.
**Disclaimer: This post is for discussion purposes only and is NOT tax advice. The author takes no responsibility for the accuracy of any information in this post.**
