When I duplicate an assignment that is only assigned once to one section the date and time also duplicates.  This is very helpful when working in a schedule that rotates.  

However, when I duplicate an assignment that is assigned to multiple sections separately, the dates and times aren't included in the duplicate.  This is frustrating since entering dates and times in a rotating schedule can be quite time consuming.  

Am I missing something?  Is there an option somewhere to have all dates and times kept un a duplicated assignment?

Thanks.