Any way to "Detach" part of a dialog?

Any way to "Detach" part of a dialog?

I am working on an old CDialog based application which uses Codejock XTP.
On this dialog, I have a separate TaskPanel on the right edge of the
Dialog. (I can't post images yet, not enough reputation)
I want to provide a way for the user to be able to Detach/Attach the
taskpanel from the dialog. So if the panel is detached, the user can move
the main dialog and the now detached "Tasks" dialog individually (maybe on
multiple monitors). If attached, the panel is part of the main dialog
only.
There are a lot of controls on the panel which I want to try and separate.
Most of the controls modify multiple controls which may or may not be part
of the tasks panel (so assuming I create a new Dialog, may be part of any
of the two dialogs).
What approach should I follow to separate and un-separate the panel? I
think it is inevitable that I would have to create a new dialog for that
separated panel. I need to consider that the controls may have changed
values and states which I will need to keep in sync. Also, the current
handlers for the controls might be referring to other controls, assuming
they are on the same dialog. There are a lot of controls so changing this
will require a lot of work.
Can anyone suggest any resources/samples or anything which may be helpful?