Hello Dan,
I used to own Yaesu products almost exclusively, and always purchased the programming software for each model I owned. Originally RT Systems was the only thing out there but fortunately there are other forms of programming software that far exceed anything RT could ever put on the market. RT has a knack for producing software that is deliberately difficult to use, and won't do what you think it should do.
I strongly discourage anyone from buying or using any software made or sold by RT Systems. Simply take a look at the reviews for this company and you'll learn all you need to know about them. It's anybody's guess as to why Yaesu continues to afford this company anything with their name on it.
Use ANYTHING other than RT software.
Randy
KE4RWS