In base columns we have a column titled start date. This evidently
feeds most lists/calendars. The box that said "update all list columns
based on this site column" was checked "yes". Then someone unchecked
that box. Now it is not available in any list/calendar and the only
way I can get it to come back is to customize the new, edit and
display form and that does not work perfectly. Anyone know how this
can be resolved?