And all this is completely besides the main point anyway: don't connect a flash with more than 50V trigger voltage to Yongnuo radio triggers, they are not built for that.
I will have to take your word for that. It seems totally wrong to me though especially as one of the stock answers to using old flashes on new cameras is "Just to be sure, always use a radio trigger" !!
"People who say things won't work are a dime a dozen. People who figure out how to make things work are worth a fortune" - Dave Rat.