How powerful is the Patta acquired for a Anadheenam land?

My ancestor grand father has fought via court with all ancestral documents & tax bills he paid for a land which was declared ANADHEENAM and bought the Patta(A) which was ordered by court for the land then he documented it well! Later years passed (4)siblings of grandfathers requested ancestral grandfather to divide their land share which made him to give separate(A1,A2,A3,A4) document making procedure so that they could obtain separate Patta using this mother Patta! (Note we also hold share (A5) in that portion) Ater 20 all these years of happenings after this procedure grandfathers passed away ! Now the share holders who received partitions ..making issues & making objections that I should not sell part of land (A5)which belong to the same survey number . Their only point is that our ancestrol grandparent have cheated by adding their father's (sibbling) SLR number (which also a anadheenam) into our shares gaining Patta in initial days. Since we hold the Mother Patta and documents will there be any real serious issues??