I was completing a 1040X for tax years 2009 and 2010. Somehow I used a
2009 Schedule C (with 2010 figures) for the 2010 1040X. I did not notice this until after I mailed the forms about two weeks ago.Is it necessary for me to file another 1040X for 2010 using the right year's form? If so, how long should I wait for the 1040X I mailed to be processed?
Thank you very much.