Groom Hair strangeness

I’ve been play with groom hair and have an issue I can’t figure out. I import the ABC hair, attach to the head, and double-click the hair to bring up the groom asset detail. Under Physics dropdown I have the Solver Settings, and then I Enable Simulation. Great. Every thing works. But sometimes when I import the ABC file I don’t have the option for the Solver Settings…same hair, same method of import. Can anyone give me any thoughts on what is happening?

EDIT: So when it happens that I don’t have the Solver Settings options, if I close the project, and then reopen, it is there. Seems like it might be a bug.