We have added a user suhas[dot]kulkarni[at]bankerbay[dot][com] to our CRM account but when we add this user to Campaigns we get the error saying "This user already exists in some other Organizations". Screenshot attached. Could you please help. We saw that you will have to remove this user from the other organization for this to work. But then this user should have access to the other Organization also. 

Thanks

Shankar.S