It's a morph channel that hasn't had anything injected into it. Empty. DAZ readscript type morphs. A value operation multiply. I'm not at Poser right now to check but off the top of my head by the name it looks like it might be one of the Creature creator morphs (or similar) that gives M4 a three fingered hand, INV being a visibility toggle to hide fingers. The gap left in the mesh is covered by the morph part that pushes the mesh together to cover the gap. I created something similar in the past for V4 called V4AMP that makes V4 into an amputee.

Why such an empty morph channel would be freezing the figure and be existing in the neck also doesn't make sense, but many things don't.