I got the 50-1032 cable this afternoon, installed it and successfully ran my Legacy engines... I also was able to control my switch machines from the App...
After a while, for some unknown reason, the App lost contact with the TIUs... I have 2 TIUs and operate in supermode... I have yet to track down the reason for losing contact with the TIUs... Restarting the App and cycling the power on the layout did not seem to help... The WIFI units were still up and operating and my home LAN was still active... Strange... I was using the iPhone App and the battery was getting weak... Don't know if that was a reason...
I am still troubleshooting this issue...
But the Legacy engine operation was great and I ran both individual Legacy engines and Legacy lashups...