I have several schedules that I run Tuesday through Saturday
To backup Monday through Friday's data after midnight.

for a work around, I run the following macro each Friday morning, after the 
backups have run.
update schedule <Domain_name1> <Schedule_Name1> type=client dayofweek=saturday
update schedule <Domain_name1> <Schedule_Name2> type=client dayofweek=saturday
update schedule <Domain_name1> <Schedule_Name3> type=client dayofweek=saturday
update schedule <Domain_name1> <Schedule_Name4> type=client dayofweek=saturday
update schedule <Domain_name2> <Schedule_Name5> type=client dayofweek=saturday
update schedule <Domain_name2> <Schedule_Name6> type=client dayofweek=saturday

On Monday Morning, I run another macro to reset dayofweek to weekday