Administrators can click on a shift to access it's history which shows all changes since publish.
This can be useful when you have multiple administrators responsible for scheduling and need to track changes. A vertical yellow warning bar will show on a shift if it has been changed since being published. Mouse-over the warning bar to access the reason.
To view a shift's history in detail, click on the shift to open the Edit Shift window.
All the changes made to that shift will be included.
When you export the calendar to a PDF document, the yellow warning bars will show on both Compact View export and Color View export.