Depreciation Carryover and Recapture questions

[Vik C.]

1) Depreciation Carryover - Let's hypothetically say I have $100K in salary so that I qualify for $25K in passive activity loss deductions. In 2012, I take a $30K net loss from real estate operations. My understanding is I can deduct $25K from my AGI, which brings my taxable income down to $75K in 2012. However, I have to carry over $5K in losses because it exceeds my $25K annual limit. In 2013, I break even on real estate activity. I am at this point allowed to use my carried over $5K as a deduction to my AGI. Right? More broadly, am I allowed to apply this carry over deduction in any subsequent year in which I am eligible?

2) Depreciation Carryover - Let's say I make $200K in salary and am not eligible for the $25K annual passive activity loss deduction. Across the life of my real estate investment, I accrue $50K in depreciation/passive activity loss carryover. I sell the property and break even - $0 profit. What happens to the $50K that has been carried over?

3) Depreciation recapture - Same example as #2, but I actually make a $100K capital gain on sale. What happens to the $50K that has been carried over?

4) Same as #4, but I use a 1031 exchange.

Thanks for any help you can provide on this subject!