Unable to Update Schedule Task

Unable to Update Schedule Task

This is my SECOND time typing this... your "Add Topic" interface does not allow going Back after Previewing in order to edit the post!

I select Admin > Task Scheduling and select the Pencil next to the Task I want to edit, then under Data Sources I remove the Exchange Servers I don't want to be polled for this task, then I click Apply. When I click Update, I'm told "Schedule description can not be empty."  However, I can't edit the Description field (it's grayed out.) So there is effectively no way to edit a Scheduled Task that was created before the Description field was a requirement.