@toborac wrote:
2. Whole amount of mortgage interest and property tax and other expenses are not split between Sch A and Sch E. This is same as my hand calculation using Pub 517 worksheet 5-1.
Last, can I mail 2017 and 2018 1040-X at the same time (in different envelopes)? Here's the IRS information. https://www.irs.gov/newsroom/amending-your-tax-return-ten-tips, anything else worth notice?
You need to manually split it between Schedule E and Schedule A.
Yes, mail them both at the same time (in different envelopes). Just be sure to sign the returns.
