Hi Michael ...
No, it does not.
Rhino 4 will not open any Rhino 5 files although you can 'save' to Rhino 4 from Rhino 5.
So it follows that one could could copy and paste from MoI to R5 and then save to R4 and then open the file with MoI
if one had a special need to use something in Rhino 5 that is not available in the others.
cheers
eric