No one e cares how it got there.

So the good news is that there are currently two full-amenity condo buildings in/near downtown Chicago in prime A+ Class neighborhoods that allow short-term rentals: 545 N Dearborn and 30 E Huron.

E big ticket items).

I still continue to use another e-signature solution (can use it for other things other than lease management) but may try e-signature options for leases.

., "East Basin", or “E-Basin”) separately if required by the system.

But how do the suspended losses for final K-1 flow into Schedule E line 41 (or line 32): from line 28 column g (passive loss allowed via 8582) or from line 28 column i (non passive loss allowed)?

Typically each partner would just report their share of the income and expenses on schedule E. 

If you are reporting it on a schedule E (you are not taxed as a corporation or as a partnership in non-community property states) then no, there is nowhere on your tax return that shows your cost basis and your tax preparer likely doesn't know. 

Unlike e-commerce or social media platforms, where data privacy issues are more visible, the real estate sector often operates behind the scenes in this space.

I would ask for the last few years of the Tax Return Schedule E for this property to see what their total expenses and net profit was.