Time Registration & Employee Result Screen

I noticed an issue regarding the Time Registration and Employee Result Screen.

Wage Code:

1. Created OT time in time registration screen
2. This was automatically transferred to the employee result screen
3. I deleted the OT time in Employee Result Screen 
4. The OT time was automatically removed from the time registration screen

Work Order/Task:

1. I created a Work/Task time in time registration screen
2. This was automatically transferred to the Employee Result Screen, under wage code 'REG'
3. I deleted the REG time in the Employee Result Screen
4. But when I checked in the Time Registration screen my Work/Task entry was still visible.

Any reason why this is?