Thanks, but the Matrix 6 isn’t one of mine, but I’ll take all the credit of course. lol
With the PCM70 the display is changing which helps (at least in the beginning) if the correct parameter is changing according to the value at the .1
Do you know it the parameter on the PCM81 will be changing if it is showing at the display of the PCM81 and it is changed using the .1?
Yes - I believe that you will see the change if you have it dialed up on the PCM screen.
It’s been a while since I had the 70 around, so my memory is always a bit suspect. The PCM 80/81 MIDI documentation specifically mentions the display does not keep up with the remote edits.
On the flip side, the Korg DL 8000R and AM 8000R do jump around and so does the Waldorf XT, so it varies. You should be able to hear the immediate change on the 81 though.
As mentioned I was giving the preset another try today and besides the odd “Cannot store data as requested” message everything works fine and as desigend (as far as I can tell).
Thanks again for the great support 
OK, you still have a MIDI loop that needs to be fixed. Until that is correct, nothing will be working 100%.
So, do this:
unplug the Electra One from the computer.
Use a USB power adapter and connect it to the Electra One.
Verify you only have the PCM 81 connected (in/out) to the Electra One port 1 (out/in).
Power up the PCM 81.
Power up the Electra One.
Now you should be able to Sync, select patches, and edit and never see the “Unable to save” message.
Once that is working, try the same thing with the PCM70. Something on your computer is causing a MIDI loop, especially if you unchecked all the routing boxes on the Electra One.