Hi Carsten,
I ran into this a few weeks ago and it's been bugging me.
I reorganized a project which had a deadline on the main task and
moved
it down to multiple subtasks in the project.
,----
| * TODO Project task
| DEADLINE: <2009-08-28 Fri>
| ** TODO Step 1
| ** TODO Step 2
| ...
| ** TODO Step n
`----
I decided the DEADLINE really doesn't belong at the top -- since the
deadline was for step 2 (and a few other tasks)... so I moved it the
hard way. Instead of cutting it out and pasting it back in the right
tree I just used C-c C-d and entered the same date on step 2
(because I
was moving the date a bit from the original date).
,----
| * TODO Project task
| DEADLINE: <2009-08-28 Fri>
| ** TODO Step 1
| ** TODO Step 2
| DEADLINE: <2009-08-28 Fri>
| ...
| ** TODO Step n
`----
Now to remove the deadline from the Project task I just did C-u C-c
C-d
on the Project task but this removed all the deadlines in the subtree
and my deadline in Step 2 (and others) is now gone.
AFAICT SCHEDULED: works the same way. This doesn't feel natural to me
but I know it is documented this way.
Does the way it works now really make sense or would just removing the
deadline from the task you are working on be better.
C-c C-d sets a deadline just for this task, so it felt natural to me
that C-u C-c C-d would remove the deadline just for this task -- but
that's what I get for not reading the manual (or forgetting since I
read
it ;)
Regards,
Bernt