How do I track cooldowns of a skill that have upgrades like Nebula to Great Nebula?

[BangCockk]

If I set the cooldown tracking of Great Nebula cooldown to skill activation of great nebula, it ceases to work when I synced down to lower level. How do I make sure that it works (preferably Icon changes accordingly as well) at synced down lower level?

I know the built in bloodwhetting works like that, but how can it work with a custom cooldown like this?