Shiv - rogue, casts not being tallied

https://www.warcraftlogs.com/reports/hVR4MxGm6v8wkQzp/#fight=15&type=casts&source=5&pins=0%24Separate%24%23244F4B%24resources%240%24195002966.0.0.Rogue%240.0.0.Any%24true%240.0.0.Any%24false%245938%24104^0%24Separate%24%23909049%24damage%240%240.0.0.Any%24195002966.0.0.Rogue%24true%240.0.0.Any%24false%245938

please see above - I was using Shiv during this dungeon run & the casts for Shiv do not appear anywhere in the Casts section .

does anyone know why this would be ? Shiv did damage & caused combo points (tags)