Subject To question

[Marc Shin]

Question regarding subject to.  If I were to purchase a property using Subject To, how would I go about making the mortgage payments on the property without the lender finding out that that the property has been sold Subject To?  Do I make payments to the previous owner and then they continue to make their mortgage payments?  Or do  I need to login to the previous owner's lender account and make the mortgage payments online?   It seems like as soon as i start making the mortgage payments on behalf of the previous owner, then the lender would immediately find out and the implement the due on sale clause immediately.  Looking for some insight here. THanks!