Problem with Analytic view activation

Hi All

  I have created analytic view which has calculated attribute when I activated it first time it was successful , but after making some modifications when I tried to activate again, it failed saying conflicts with index name.I delete the calculated attributed and activated again it was successful,but now when I add it back and try to activate it again it throws same error conflicts with index name, I got to know that the problem is there is already calculated attribute with the same name .Please advise on how to overcome this.

Thanks

Santosh Varada