Parameter Updater for Material Takeoff Schedule

My firm currently uses a material takeoff schedule as a Finish Legend. It displays parameters that are in the material and several project parameters that we have set up. It would be very helpful to be able to update these parameters with Speckle Connector, but it does not appear to work on material takeoff schedules. Is this possible? See the linked test file, and try updating the Multi-Category Material Takeoff schedule with Connector through excel. I understand that parameters such as the Material Keynote can not be typed in, but I would expect fields that allow text entry to work, like the Description and Manufacturer.