Passing of minutes of previous AGM

 A motion was put (standard at AGM) for the minutes of last meeting to be passed as a TRUE  account.  I did not agree and voted accordingly.  My reasons were given to the Strata Manager.  This motion was passed with votes from the people who had been at this meeting .  However votes were taken and added to the count from proxies and people who were not at this AGM.  I simply want to know if this possible to vote on a true account when they had not been present?  When I asked the chairman of our E.C. I was told that all members of the O.C. had the right to vote.