An update on my Blueberry Sundae:
Right after I moved this baptisia, the temperatures spiked into the high 90s (it may have reached 100), sunny and no rain. I watered it religiously, but it looked so sad. The leaves wilted and turned black and many of the canes also turned black. I was afraid that I had lost it.
It has since gotten cooler and rained a few times. Last week I noticed that there was new growth! Today I went out to take some pictures.
You can see here that I had already cut away some dead canes, but a few more have since turned black. Most of the old foliage had wilted away. However, notice the new growth.
Here is a close-up showing the new growth. It's too early to say, but I'm very happy and confident at this point that it'll come back. The real test is what it'll do next spring.