Sub2 Closings

I am curious about the closing process when my tenant buyers cash out. I bought sub2 and have put tenants in on lease/purchases. Can someone tell me how to do the cash-out closing? What paperwork is the title company going to ask for? I have the purchase agreements, POA, Disclosures, Authorization to Make Account Changes for the Mortgage, and Warranty Deed etc. I just want to make sure I am not going to run into any big suprises and realize I have 50 deals that were structured the same way. I will have my attorney do the closing, but some advice from other investors would be appreciated.