I spoke with Kyle G today and he told me the below. I just want to call him out here and say Thank You Kyle for helping us with these Vyrso issues... I (and I'm sure others) really, really do appreciate it.
"You might be interested in knowing we've done an analysis on Vyrso titles that have less toc-entries than we'd expect. We're running a mass re-conversion on Monday that will update about 4000 titles."