I’m going to look into this.
Hi Bandu,
I think that you need to make use of the “>Sub-Sample Geometry” option in the “Motion Blur and Depth of Field” section of the “Main Controls” rollout in the Krakatoa GUI. This feature is described at length here http://www.thinkboxsoftware.com/krak-main-controls#.3ESub-Sample_Geometry. Normally Krakatoa only applies animated node transforms to matte objects, and you need to enable geometry sampling to capture animated vertices when motion blurring matte objects.
Let me know if I am misunderstanding this.
I have attached a scene that produces this image.
tp_matte_blurred.zip (23.1 KB)