Basically it is a government land. The original owner did not buy the property but he was allotted with the land under a scheme by government.
Therefore it is a patta land and not a land acquired by a registered deed.
If there was a mistake on the part of the government while allotment or if the mistake of survey number or wrong allotment was noted at a later stage, government has full rights to repossess or take actions to retrieve the land , especially if it is not falling within the laws of adverse possession to the allottee.
Your contention about catena of rulings with regard to title by revenue records will not be applicable to this situation, because the owner acquired title by revenue records only and not by a registered deed.
However this opinion will not restrict you from pursuing the matter legally.
You can explore the legal possibilities to get the desired relief and remedy to this.
You may consult an experienced lawyer in the local and proceed legally against the authorities concerned as per procedures of law tht would be applicable to this situation.