Ok. Easy fix on that.

Daz gen 3 figures do not load with their limbs/arms zeroed. Did you zero the figure with the joint editor before exporting the limb as I instructed above? Always Zero! ;)

Here's the steps a-z for m3...

Load m3 from library

With m3 selected, window: joint editor.

Zero rotations. Close joint editor.

File: Export Wavefront obj. All options unchecked except 'include existing groups'. Select just limb parts. Export.

File: Import wavefront obj. All options uncheck except 'weld indentical'.

Enter set up room with limb model selected. Load m3 (unlike a pose room load, m3's rig will load zero in set up room) from library by clicking change figure. Exit setup room. Done. The tearing problem you encountered is because you loaded the zero rig onto the non zeroed mesh, consequently the meshes vertices were falling outside the influence spheres of their poly groups relative bones, hence tearing. You see this problem with conformers also, generally resulting in something that looks like spikes shooting away from the mesh or actual tears. With conformers you usually fix the problem by scaling its fall off zones to include those verts. Not necessary in this case.

Always zero rotations on your first limb donor instance with the joint editor. Also there's actually a "super" zero included with Poser that can be accessed via Wardrobe Wizard/Figure scripts that will zero both rotations and translations (if any). I personally use Dimension3d's 'Reset Values' Script which lets you zero all values (morphs, parameters, hidden, rotations and translations, etc.) selectively.

Let me know if you encounter any more issues. Every different figure has different things to consider.

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