Hub Protect -- Multiple Hubs to 1?

[Eric.C.Miller]

I don't believe the C-4 is supported as a Hub Protect migration source, only the C-5.

Hub Protect Z-Wave transition - Still limited to C5 and above?

I recall when you all first started discussing the possibility of the backup/restore migration as part of your Hub Protect Service, that this would only be available for C5 or newer hardware. I didn't see any specific note to this effect in the documentation . . . is that still the case? Or have you been able to make it work for C4 (or C3) hubs as well?