Ability to unmerge Organizations?

Hi Vamshi, there's no native functionality in Zendesk yet to merge organizations, hence also no way to un-merge them. You may refer to this community post here as well asking for this feature to be added. https://support.zendesk.com/hc/en-us/community/posts/4409222756762-Ability-to-merge-organizations
 
With this, I'm not entirely sure what you mean, unless there is a third party app that you are using to achieve this. Nevertheless, we would not have any native functionalities to un-merge organizations at the moment. 
 
Feel free to let me know if I missed something here for clarification. Cheers!