OT: Thanks - that seems to fit what I discovered about the presence/absence of an underscore in the name, but it also suggested an easy way to test different names without having to save a PP2 and check the 'name' and 'prop' fields each time. I've added a new post to the other thread. Regarding the other stuff - I'll need to read through that a few times, and get a second morning coffee to help get my head round that !

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The 3Dcheapskate (also available in DAZ and HiveWire3D flavours) occasionally posts sensible stuff. Usually by accident.
And it usually uses Poser 11, with units set to inches. Except when it's using Poser 6 or PP2014, or when its units are set to PNU.