contact import added dates automatically
I recently updated to Yosemite and when I did my contacts all had inserted a birthday and anniversary date of November 30, 11999. Does anyone know how to remove this as a batch? I have over 6K contacts and would like to know how I can remove these dates without going in to each individual contact.
As a note, It did not overwrite any information that was previously in the fields.
iMac with Yosemite 10.10.4
iPhone 6 iOS 8.4
Thank you in advance for your help!
iPhone 6, iOS 8.4, null