Quote -

Can't speak for Wings (but I've read issues on occasion).  Maybe other 3D applications are better suited to the clothing building?  If it has trouble with grouping or setting materials or whatever, there are other tools that can do that so perhaps build there and optimize for clothing use elsewhere?  Seems like a problem with the modeler of choice rather than something the needs to be fixed in Poser.

It can be tricky getting Wings and Poser working together, but when they do it's a very complimentary pairing.

First thing to learn is scale.  Setting Wings' .obj import to 10.0 and export to 0.1 will bring Poser objects in at a reasonably large size (they are notoriously small) and export them at their original size.

Of course you have to choose the correct import/export options in Poser also.  Using the default export options, and unchecking "cenetered" and "percent of figure size" will allow you to move objects from Poser to Wings and back without them moving or changing size.

And finally, don't use spaces in your material names or Wings will truncate the part of the name after the space.

But they are quite a good combination once these habits are adopted.

This isn't to say Wings couldn't use a few features here and there, or make more operational sense (wish Wings' magnets worked like Poser's magnets) but Wings does work well with Poser imports, and Poser works equally well with Wings' exports.