Freezefork support gem (and its counterparts) is not engraveable

Freezefork was not among the support gems listed as being removed in the patch notes:

"

Blood in the Eyes, Discombobulate, Unsteady Tempo, Unbating, Unbending, Untouchable, and Unyielding can no longer be engraved in the Gemcutting menu, and existing Gems will be deleted upon logging in.

Yet it is not possible to engrave the support. Use a support skill gem, swap to all gems, search "fork" or "Freeze" or "freezefork" and you will not see it listed among any of the results.

The same is true of its counterparts: Flamepierce and Stormchain

Does anyone know if this was intended with the changes to the support gem system or if they were accidentally removed?

Bump! Nowhere in patch notes were these support gems mentioned

Bump. There's either a bug on the game or the patch notes are wrong.