'Insert as Simple Link' in Sequence diagram

[sunil.sahu]

Hi,
I have made a set of seq. diagrams in which i have dragged various classes as 'Insert as simple link'. Now I want to change all elements in those seq dgms as  'Insert as Instance of Element (object)'.  
Will it amount to re-drawing all seq diagrams?
or is there any shortcut way / menu option using which i can change it.
Thanks.

[thomaskilian]

Either you use the context menu for each element (Advanced Settings/Convert to...) or you write an add-in to do the job.