@Rightfield, FWIW, the IRS tax return transcript seems like it cannot reliably confirm whether TurboTax e-file transmitted IRS 8582 page 3 or not. I just checked my own IRS tax return transcripts for the past couple years when my return did not include any IRS 8582 page 3s and when all were paper filed, so I know exactly what I mailed to the IRS. Unfortunately, the IRS tax return transcript for each of those years does not seem to include anything about any pages of IRS 8582 -- at least not when you're just accumulating passive losses. The only mention of Form 8582 (in the negative) seems to be in the completely irrelevant (for me) sub-section "Income or Loss From Estate and Trusts" of "Schedule E--Supplemental Income and Loss": "Passive loss not reported on Form 8582."
Thus, until the federal government shutdown ends and the IRS fully reopens and staffs its phone-based customer service, it seems like only TurboTax can definitively advise whether IRS Form 8582 page 3 actually gets transmitted when e-filing.
