One other observation; When I first noticed the trouble was when I brought them both into a scene to test render.

1) Set up V4 & her tail
2) Brought in M4, posed the tail, then posed M4
3) Tried to adjust M4's tail: LOCKED ??

Then I turned away...when I looked back BOTH the tails were curled up like a pig's tail?!!?
Mike's was Locked, Vicky's I could pose but it was so curled I just hit Render because I was checking clothing and colors....
The Render came out with Vicky's tail in the original pose I set?? But back in the Pose Room it was still curled?!!?

It was late, I shut it all down and came back to it today...

Oh, and each tail if you are not familiar with them, have their own .obj file in their own separate folders (one in MilMan and one in MilWoman geometries folder)
And I did try re-naming some of the CR2 and even one of the tail .obj files, just trying to 'separate' them for Poser - no luck