The defendant-mortgagor, who remains obligated on the note and a potential deficiency judgment, has standing to appeal from the order vacating the dismissal of this action, notwithstanding that he transferred his interest in the encumbered property before the action was commenced.
U.S. Bank Natl. Assn. v. Thompson, NY Slip Op 00251 (2d Dep't January 14, 2020)
Here is the decision.