I startrd out with one that I ordered from Rich Dufresne several years ago and last year i had several babies that I moved to various spots. They seem to have a better transplant survival rate the smaller they are. I have wanted to move my oldest one out of a corner I planted it in but I don't want to lose it so I have let it be. I have one very small clump that I broke off the parent last week while cleaning up dead stems. I stuck it in a pot of soil right away to see if it will make it.
To answer your question Joni, I think it can be hit or miss transplanting this salvia. You might want to cut out a small clump to transplant. That way if it doesn't survive you still have your original plant as insurance.
Ward has much better plants than I do so that is why his doesn't get much or any use. Mine may get a little more use by the juveniles prior to migration plus I do like the fountain like look of it.
USDA hardiness zone 6a
Heat zone 4
Sunset zone 39