Why can't I promote or reschedule a change order I created using an import map?

Change orders that are generated from item import maps are automatically approved.

However, the change order won’t be promoted or rescheduled if the effective dates of some affected objects in the change line are less than 30 minutes apart. Ensure that there is a time difference of at least 30 minutes between the effective dates of the affected objects before promoting or rescheduling the change line.