[O] Bug: Cloning tasks deletes clock time in the original [7.7 (release_7.7-571-gf558105)]

[Bernt Hansen]

Consider the following org file:

--8<---------------cut here---------------start------------->8---
* Orig Task 1
SCHEDULED: <2011-11-19 Sat +1w>
:LOGBOOK:
- Note taken on [2011-11-19 Sat 21:24] \\
  foo
CLOCK: [2011-11-18 Fri 20:30]--[2011-11-18 Fri 21:24] =>  0:54
CLOCK: [2011-11-19 Sat 20:23]--[2011-11-19 Sat 21:23] =>  1:00
:END:
[2011-11-19 Sat 21:23]
--8<---------------cut here---------------end--------------->8---

This is a repeating task with some clock time on it.

Now I need to change the 2nd occurrence from now so I clone the task to
create 2 more followed by the repeater as follows:

On the task do C-c C-x c 2 RET +1w RET

Now I get this so I can edit one of the individual entries

--8<---------------cut here---------------start------------->8---
* Orig Task 1
SCHEDULED: <2011-11-19 Sat>
:LOGBOOK:
- Note taken on [2011-11-19 Sat 21:24] \\
  foo
:END:
[2011-11-19 Sat 21:23]
* Orig Task 1
SCHEDULED: <2011-11-26 Sat>
:LOGBOOK:
- Note taken on [2011-11-26 Sat 21:24] \\
  foo
:END:
[2011-11-26 Sat 21:23]
* Orig Task 1
SCHEDULED: <2011-12-03 Sat>
:LOGBOOK:
- Note taken on [2011-12-03 Sat 21:24] \\
  foo
:END:
[2011-12-03 Sat 21:23]
* Orig Task 1
SCHEDULED: <2011-12-10 Sat +1w>
:LOGBOOK:
- Note taken on [2011-12-10 Sat 21:24] \\
  foo
:END:
[2011-12-10 Sat 21:23]
--8<---------------cut here---------------end--------------->8---

I have the entries I want but my original clock lines have been deleted.
I would expect this behaviour for the newly created clones only - not
the original entry.

I ran into this for a weekly meeting task I cloned and ended up
recovering my clock lines from my hourly git repository but this
shouldn't be necessary.

I'm also not sure exactly why I get 3 entries when I ask for two --
maybe that's a special case of the repeater in the original task but it
feels weird.

Regards,
Bernt

Emacs  : GNU Emacs 23.2.1 (i486-pc-linux-gnu, GTK+ Version 2.20.0)
 of 2010-12-11 on raven, modified by Debian
Package: Org-mode version 7.7 (release_7.7-571-gf558105)