How many sellers dont bother to send you the paperwork?

[Account Closed]

for those of you doing short sales, how many sellers start out being very cooperative, then just up and quit you, and dont bother to complete the required paperwork? Lets say you have the following after initial contact with the seller.
- power of attny, notarized
- warranty deed, notarized
- signed sales contract

Now, supposing the sellers just give up, move out and refuse to complete the rest of the required paper work. I would think my best option would to just simply move on to the next deal and not bother pursuing the deal any longer if the sellers no longer wish to cooperate. If I still want the property, I could jsut wait until the bank gets it, but I dont think I could use transactional funding the same way, or at all, or could I. Just a thought that got me to wondering about how to keep my options open.