Hi @t_pnw ,
You can still change several of the “high level” parameters on the detailed HVAC templates, like the economizer type and heat recovery. While I know that we supported it in legacy, just changing the rated COP of a piece of HVAC equipment is usually not the best practice as you should probably also be changing the curves that define the performance of that piece of equipment to reflect why it has a better COP. This type of curve-editing (alongside the rated COP) can be done with Ironbug, which you can use both with Legacy and with LBT via the workflow here.
For which HVAC template are you trying to edit the COP and do you have a sense of why the COP is better for the equipment you are trying to model?