Dual Channel Tuya Power Meter - only one channel is accepted by Energy integration

I have 2 dual channel power meters (Zigbee). My electrician installed them with my new solar installation. I use them to monitor power usage for the hot water cylinder, electric hob, air conditioners etc

They work well outside of the Energy integration, but I can only get the Energy installation to recognize one channel on each meter. The power entities have _a and _b suffixes but when I enter the entity name the Power integration drops off the suffix.

If this is a limitation of the integration I wonder if I could use a helper to split these sensors into two?

Thoughts kind readers?