I have been using Cohort Sync for two years and have just begun poking around with ad-hoc Config Reports.

To my dismay may Enrollment Dates for some of the students that were in a large cohort have 12/31/1969 as the enrollment date.

Impossible, so I search the forums. Randy Thornton's excellent response explained it.

Should a fix request be submitted to require a start date when creating a cohort?