From the begining DV's identity was kept under wraps. He never revealed completely. As Sachi's family is a trusting one, they did not press it. He did mishandle the case by not checking if all papers were there as he is in lala land? We can only wait and see what teh Cvs will do.
As DV came on a vacation (his mom tells in the convo), he may not have anticipated that he would meet Sachi from day 1. He I feel never thought he would fall for her either. In which family will grown up sons not have a difference of opinion with their father?
May be DV is concentrating more on Saachi and her feelings for him. Once he knows she too reciprocates his feelings, he may reveal all and help her to retain her land. As an upright business woman, Saachi too may be forced to think of getting land away from hers so her farm stays put and the hotel comes up. Afterall, which hotel in this world doesn't want to offer good branded jams for its early morning breakfast?
But the bottom line here is CVs always don't follow real life logic in the tv serial stories. They always want to make high voltage drama regardless of the fact that every other tv show is doing the same and many viewers are getting sick of seeing it.