iotile-gateway throwing away scan packet fields?

Somewhere in iotile-gateway, scan packets are being modified before it ends up at a consumer (via hw.scan(), for example).

We discovered this because some of our systems rely on finding the signal_strength field in a packet to collect diagnostics.

I am looking for where in coretools this is happening and will update if I find it (opening a ticket now in case anyone finds it faster!)