Another option would be to export all the props as an obj and import them and then reimport them as one object. You may have to set up the shaders again.

Oh and something else, with the grouping prop, don't have the rest of the parts parented to the base when you parent it to the group.

---

Available on Amazon for the Kindle E-Reader Monster of the North and The Shimmering Mage

Today I break my own personal record for the number of days for being alive.
Check out my store here or my free stuff here
I use Poser 13 and win 10