Follow up, after googling for a while, I ended up back on PBP forum reading a thread started by Hank. The gist concerning this thread is UART tool won't do what I want. I need to use a real terminal or custom GUI. Well I don't plan that level of effort for the testing I am doing, So tonight I will try 1 last thing.

If I can fit the data on 1 line, maybe I can send a "header" so to speak as the first line, then the data all out on the next line. When I send new data, I will send the code for backspace to see if I can get to the beginning of the data line and send the new data.