Never heard of it. In case you didn't already know, Yorkies are notoriously hard to potty train. As long as you're consistent, you expect reasonable goals, and you don't lose your temper, training can be done fairly easily.
How exciting to add to your family! Welcome to yt.
PS YT is your free resource to potty training. There are so many members with different lifestyles, and differing personalities for pups and their humans that we've all taken a slightly different approach to training. What worked for me may not work for you, but what member "X" did might.