M4 must be initialized for the morphs to work. Perhaps you did it without remembering you did it?

There can be problems if you install it in an external runtime. I think because where Poser looks for the files can be unpredictable. Copying the !DAZ folder into the default runtime means Poser will find it. (You can still have the M4 figure and his stuff in an external runtime.)

Michael 5 does not work in Poser directly. Whatever you did with Michael 5 probably does not apply to Michael 4.

It is normal for Hiro 4 to be a separate figure.

Some things to keep in mind:

The body and head morphs are generally applied separately. So setting the realistic morph to 1 in the body will not affect the face. You need to select the head, and use the realistic dial there.

Some of the morphs aren't meant to be used together. The realistic head morph will look terrible if you combine it with the Hiro morph at full strength. Set the Hiro morph to 0, and the realistic morph will look like it's supposed to.  (You can combine the head morphs at partial strength with good results.)