Mismatched position with l.r map

We have a purchased a land of 0.17 acre about 30 year ago from a l.r plot of 0.85 (A plot) acre as per record.later rest part of plot was purchased by another 14 people in different time period.beside this plot another l.r plot exist which was about 0.22 acre(B plot) .these two 0.85 acre and o.22 acre plot originate from same r.s plot which was of 1.07 (C plot) acre and owner of this r.s plot was single person from whom/ his generation we all purchased the plot.In 0.22 acre plot ,his generation live. Everything was fine till 1 year ago.and we all lived happily. But recently land map ( l.r map) has been published and we all known that o.85 (A plot) acre recorded plot area has actually have o.22 acre area and o.22 (B plot) acre plot area actually has 0.85 acre land.And position of the plots are totally different.our area ( in plot A) which is beside main road and valuable. C plot owner generations now claiming A plot specially targeting road side area and threatening us.we all 14 people including us has different r.s plot number in our land deed as per recently known r.s area map.Due to wrong record information ,We are in trouble. Kindly give suggestion ,how to solve the matter legally so that we all 14 people can retain our possession .We all cannot move in B plot as it has actually 0.22 acre area though record says it is 0.85 acre area