Conveyance deed and 7/12 extract

Does conveyance deed and 7/12 extract include the name of all the registered owners of the society? or it can be done with chairman or society alone. Is there any chance of it being misused if done in the name of society chairman or in society name? I am asking this because, in our society the present committee was appointed for 1 year for handover from builder and for conducting elections, thereafter no elections have taken place and their term lapsed around 1 year back. And the present/ incumbent chairman is insisting on getting conveyance deed in the name of chairman (e.g. .. conveyance deed between builder/ promoter and chairman of xyz society). They have no plans for conducting elections, though under our pressure they wrote to registrar and requested to conduct elections (this happened 2-3 months before expiry of their term), Chairman verbally communicated that they have no intentions of conducting elections and would win by hook or crook if ever conducted. All kind of wrong things are happening in our society. As our society is on the outskirts of pune, lot of unscrupulous and goonda's are supporting them in this deed. What to do??