After downloading 4.5.0.1537, I tested the option to ignore switches again. I opened Control Panel, selected Switches and then marked all to be ignored. All the switches then disappeared from the Control Panel list.
However, I closed SGPro and then re-opened it and all the switches were back.
I repeated the action. When I closed SGPro, it asked me to save the sequence even though I had not created one. I saved the empty sequence. After re-opeing SGPro, all the switches were back.
Charlie