Previous states formation such as Somalia and Somaliland were a legacy of unfair division on the colonies and stopped their existence after unification and entrance into the United Nations.
Thus the creation of the state was in the interests of Somali people and freely determined by them and abolished previous states formations such as Somalia and Somaliland.
Thus entry into the United Nations definitively abolished previous states formations such as Somalia and Somaliland because the United Nations resolution formed new sate formation with all the rights, privileges in international law.