Hi, I had filed my taxes online e-filing and because on form 8949 I didn't list all my security transactions as single transactions along with the wash sales, I was told I need to physically mail in Form 8453. I am looking at this form at the IRS website and I am wondering, am I allowed to just fill out this form 8453 and then physically attach my 1099-B that I received from my mutual fund to show the transactions? I feel that would be so much easier than writing out all the steps such as date acquired, how much it sold for, etc. Is this allowed?
