Results by Calendar Group Not Updated

We have recently found that the Results By Calendar Group (nor the Results by Calendar) are reflecting changes made to an existing absence. The sequence of events include:

• Enter a three day sick absence on timesheet.
• Run Absence Calc.
• Changes for new 3 day absence are reflected in both Results by Cal Grp and Results by Cal
• Change sick absence from 3 to 4 days or add new absence for two more days.
• Run Absence Calc
• The sick absence still only shows the 3 days (24 hours) even though.
• Running Absence Calc with "Recalculate All" does correct to show all 5 days.

What am I missing here? Is there something not getting triggered?