PVLAN on IP Interface

I’m attempting to route from an isolated PVLAN to an ip interface on our core. However, I can only reach the gateway with ports assigned to promiscuous secondary VLANs.

It is the exact same issue as described here: pvlan ip interface - Alcatel Unleashed

I have looked through the advanced routing guide, but to no avail. Any advice is appreciated, and I am happy to provide more information as needed.