The first thing to be aware of is that every figure we load uses WM rigging to some extent, but to allow us to make content for Poser the WM has been ‘hogtied’ to mimic Posers rigging. So when you convert your figure to TriAx your still using that ‘hogtied’ rigging, which means it doesn’t bend any better than it did before. To get it to bend “properly” means you have to redo all of the WM rigging, which is a major undertaking if you don’t know what your doing (that’s what I’m finding at any rate ).
As for Clones, they are unrigged morphs that closely match (and I do mean close as in almost identicle) the shape of the figure you want to autofit from, I’m converting Aiko3 to TriAx and to date have 3 clones made for her (V3, M3 & H3), with the Gen3’s it’s pretty easy to do if you have all of the Gen3 figures as you can use their .OBJ files as Morph Targets, then it’s a case of setting the new morphs as Modifiers/Clones when you save them out as assets. You can do the same for the Gen4’s so V4 could have a clone of M4 & K4, but making clones for non related figures is a lot, lot harder.
Then you have the problem of no projection templates, which means your autofitted conformers will take their WM, groups and rigging from your figure.
Then there’s INJections, if you didn’t add all of your morphs to V4 before you converted her then you have a pile of empty channels that are useless, as you can’t INJect into an empty asset channel.
All in all a hell of a lot of work just to get an older figure to work well as a WM figure.