Hi Dave
Thanks for your reply. When I deleted the old turnout reference in the Turnout Table, I received a dialog listing where in JMRI it was referenced and in use. I confirmed that I wished to continue and it cleared in the Turnout Table. I suspected that this was causing problems in the Blocks Table from your earlier observation and corrections. I shall try your suggested method and see how I get on.
The other concern I have is that I had select each turnout/Edit and change the 'Continuing Route Turnout State' to the inverse of how I had set it up. Only then does my Control Panel and Panel Pro agree with each other and the hardware. What impact does this have please?
Best wishes
Peter