Version:           4.4.5 (using KDE 4.4.5) 
OS:                Linux

When I edit the "due time" field of a periodic todo and afterwards mark the todo as completed, its due time changes back.


Reproducible: Always

Steps to Reproduce:
File->New To-do
Set "Title" to "test".
Check the "Time associated" check box.  Set "Due Time" to (e.g.) "15:00".  Don't check "Start".
Go to the "Recurrence" tab and check the "Enable recurrence" check box. Set other values as appropriate.
Choose "OK" to save the todo.
Double-click the newly created "test" todo in to-do view.
Everything is correct: "Start" is unchecked, due time is "15:00".
Set "Due Time" to "14:45".
Save the todo again by choosing "OK".
Double-click the todo again.  Now, the "Start" check box is checked and start time has been set equal to due time.
Mark the "test" todo as completed by clicking the check box on its left.
Double-click the todo again (it has probably moved).  Now, "Start" is still checked, start time is "14:45", but the due time has reverted to "15:00".


Actual Results:  
After editing due time, "Start" has been automatically checked and start time is set equal to due time.
After marking the todo as completed, "Start" is checked, "Start Time" has still the value "14:45" I set for due time, but the due time is "15:00" again.


Expected Results:  
After editing due time, "Start" should have remained unchecked.
After marking the todo as completed, "Due Time" should have retained its manually set value "14:45".


OS: Linux (i686) release 2.6.34.1
Compiler: gcc

I have observed this behavior at least since 3.5.9.