They have to pay you unless they file bankruptcy

Shortly after the Seller purchased the house (2005) the Mortgage Company was dissolved (prime lending issues) and the mortgage was moved to another company and over the years the mortgage has changed hands several times.The Seller had a bankruptcy where the 2nd never came up, there is no record on her credit reports and she claims to have never made 1 payment to the 2nd. 

All could change overnight depending on the way leases are structured and bankruptcy laws.

I was notified after I purchased the property and after I agreed to let the tenant renew the lease, that she had been several months behind on rent with the previous owner and was filing for bankruptcy.

Two or three months ago, we started sending letters to probate, divorce, NOD, eviction, and bankruptcy lists and are now sending around 2000 letters a month.  

A lease also is not conveying the rights of ownership required to contract with others or pull  permits required.Leases can be terminated, bankruptcy, foreclosure, estate matters, law suits, or if an owner must move back into a property as their principal residence, can have a lease terminated.Review the concept of the "Bundle of Sticks" ownership rights and what a lease conveys, it is only the right of possession, not all rights.An option can also be broken, consideration may not be sufficient, it may be drafted improperly or illegally.

The loan company HSBC started a forcloure and then family member files for bankruptcy and HSBC files paperwork with court saying Charged Off.

However all bankruptcy cases can have the trustee avoid transactions for a period of time prior to the bankruptcy retroactively. 

That information has likely been gleaned from the public records which themselves are also not up-to-the-minute.Just to add to the items @Andrew Holmes listed, follow bankruptcies, also.

We can also help with loan modification, renter placement, and bankruptcy attorney referral, but these options are also quite unappealing to a distressed owner.