Should the inheritance be re-divided from the beginning due to 22 extra shares received by the son, or should the recently discovered two carats be divided according to Islamic law, "with the male receiving the equivalent of the share of two females"?

If the adult, sane heirs are satisfied with the first division by mutual consent, it is permissible, and no one has the right to revoke it, because division by mutual consent is akin to a sale, and its option is the option of the session (khiyar al-majlis). As for the land that appeared later, it is not included in the initial settlement and belongs to all heirs. It may be divided in one of three ways: usufruct (muhayah), division by mutual consent, or according to the inheritance shares (the wife receives one-eighth, and the remainder is for the son and daughters, with the male receiving the share of two females). It should be noted that matters of inheritance are serious and must be referred to Sharia courts or discussed directly with scholars.