What I do is load up an ADT into a FX RACK, set all the parameters to a minimum and route the RACK FX OUTs to liveprofessor over dante as an FX SEND to an external FX like a Reverb (UAD480, ECHOBOY, etc.).
Works well and gives me back my heavily needed Buses for Monitoring and IEM.
I have seen the input resistors of other allen&heath stageboxes (AR2412) bocoming high resistive (from 22ohms to several kohms) after phantompower accidents. maybe there is something similar going on here. this would be an easy fix for technicians.
i don’t really know how he transferred it but i think it was a drag and drop. the name of the showfolder was not standard. i already deleted the entries, but it didnt help.
to really use dante for plugininserts with acceptable roundtrip latency you will need a hardware dante device on your computer side like the rme digiface dante or a dante pcie card from focusrite or yamaha.