Hi K Rao,
I would have to test that out as I have not tried that myself. If I had to guess on this one I would say that when you set the impact and urgency on an individual ticket (by editing the ticket itself and not using edit-in-list) there is a trigger that kicks off the priority matrix calculation and sets the priority accordingly, however maybe that trigger does not get triggered when using the edit-in-list functionality. I am not sure that the product was designed to do what you are looking to do here by bulk editing impact and urgency and having the priority calculation triggered when doing so.
I would have to test this out in-house and see if I get the same behavior.
In the mean time - one question for you... when you manually edit a ticket individually (not using edit-in-list) and set the impact and urgency, then save it, does the priority calculation work properly?
Thanks,
Jon I.