You need to consult with an attorney and have all of your papers reviewed. A Motion to Dismiss should have been filed, instead of an Answer, if you wished to challenge jurisdiction. I don't understand what the lender gains, or you lose, by attaching the prior complaint to the disclosure statement. If you are concerned, you should just attach your initial motion and order of dismissal to you disclosure statement, or do a supplemental disclosure.
The above "answer" is for discussion purposes only and is neither intended as legal advice nor to create an attorney-client relationship. An attorney-client relationship is not created until after an in person consultation and I agree in writing to provide representation. I am licensed solely in the state of Arizona. You should consult with a knowledgeable attorney in your jurisdiction.