The Modified AGI worksheet, 7th line, is "Royalty and nonpassive rental activities income or loss". This should have taxable income from rental property, carried from the Schedule E worksheet (as indicated by 'data source'). However, no value is being carried over, the field is blank. As a result the MAGI is undercalculated, and differs, for example, with what you get if calculating it using the worksheet in IRS Pub 590A.
