You really need to consulting with your legal counsel as this is not a compliance or regulatory issue. However, if the Chapter 7 was discharged and the borrower did not reaffirm the second lien, then I believe you have lost any ability to sue the borrower for payment (foreclosure).
I think in that case (Ch 7, doesn't re-affirm) you lose the right to go after the homeowner individually, but you can still force the foreclosure. We had a somewhat similar situation and were able to do this.
There may have been other particulars that made the situation different though.