I didn't address Jen's original question.

For a visit-based study the "Date" column still does not have any special meaning. However, the intention is that it will have the same meaning as for date-based study and the same as the optionally specified "Visit Date Column" in visit-based studies).

The hope is that at some point in the future we will be able to blur the lines between date-based and visit-based studies and separate the tasks of capturing data with dates, and then aligning data using visits.

Matt