Were talking EPIC crazy WAY-out there stuff and truth is that stuff happens you will be more worried about where you get your next meal than your dang real estate, EVERYONE will be in default. 

For property owners with out-of-state investments, is it necessary to keep all receipts and invoices for write-offs during tax season, even smaller jobs performed by the PM's handyman?

I tried emailing and also calling (left message in voice mail since) the county treasurer to ask for the process for obtaining the deed, but no response. 

Dang in my market most duplex are looking at a negative cash flow.

no, all he gave was a invoice with his company name and address.

Never flipped before.If you take out a HD loan and say your construction estimate comes in at $100k.Eventually the actual estimated construction costs only cost you $90k.When you take a draw does the bank give you money based on receipts/invoices?

Enter a maintenance request, assign a vendor, and attach a fake invoice.

:)   Perhaps you'll have to work WITH a local Roofer to replace your roof (or do repairs), then you'll save $ and have an Invoice showing it was done, for whichever Ins Co you are with.

They were able to dodge actually paying me by invoicing me for things they haven't actually done yet....

Then in any good property management software with accounting, you simply create the monthly invoice (for servicing the debt) and then mark that invoice as recurring for the duration of the loan.