Permanent Alimony paid but wife pleading not paid.

This has reference to the mutual divorce (after 498A was quashed by High Court) and agreed amount for permanent alimony. During mutual agreement, to avoid tax issues, she requested cash payment. I agreed and asked her to file an affidavit in the court that she received the amount after receipt of money. She agreed. I’ve paid the money and she filed in the court an affidavit confirming receipt of the amount. After 1 month from the date of affidavit final hearing occurred and mutual divorce granted. After 6 months from the date of order, she abused my parent at their residence and they filed a nuisance case. Later, she approached the court and filed a complaint that I did not pay any alimony. District legal service authority sent me a notice to my e-mail and I asked my lawyer to file a counter with all evidences (court copies). My lawyer informed me that there was another DVC case which was not closed and warrant issued due to non-payment of alimony. No summons personally served as I left the town since 2015 (after the nuisance at my parents’ house). I do not know when the warrant was issued. I have only evidence that she received the amount and the affidavit filed. If court asks me to produce evidence I have to bring in the names of the persons from whom I’ve taken money / hand loans. I don’t want to do that. Because, I promised that I will return the money and I will not implicate them in these matters. I do not understand, why my lawyer is saying that I may have to prove from which source I paid the alimony. Please advise.