You can try to add the same subject (Person ID) to a different study. This should take you to a page which will try to enforce the first DOB on you, but also provide a link to change the DOB if necessary.
I think you can also edit if you go to the 'Global Subject Record' in the View Study Subject page, but I am not sure about that at this early hour.
Hope that helps, Tom
Tom Hickerson | Senior Tier-2 Engineer [email protected]
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