How to "unwrap" exported data or matrix wrapped with "GH_ObjectWrapper"?

I’m using the Data Output/Input GH components to store data outputs from the Adaptive Map. I have no problem with storing and retrieving the TCP data (output as a list). However, OpTemp data run through the ThermalMtx (output as comft_mtx) seems to be “wrapped” with “GH_ObjectWrapper” and so the VizThermalMap can’t read it.

Is there a way to avoid this this objectwrapper or “unwrap” it before using it in subsequent components? I’ve tried decomposing the matrix into datacollections, but the data collections themselves are then individually wrapped as well…