via Pierre LeBrun tweets,

Remember that NHL hockey ops is collecting video evidence, such as Kadri (off-side) goal last night, and will submit them to GMs in March.

Almost like a shadow operation but all the missed calls on goals, etc., are going into a big video file and will be presented at GMs meeting

The point will be to show GMs they have the video evidence if they choose to support extending parameters of video review for next yr

Watch the Kadri off-side goal below, scroll to the 1:45 mark for evidence...