I assume what you're getting at is if this is going to be an issue if the verts translate across incorrectly (which is to say -- if a morph has verts listed in one direction that in another morph are the opposite you cannot just get a smooth translation that takes into account the arc that should be in place).

All I can say from my experiments is that these translate correctly -- here's an image where I used two complicated morphs, one in which the wings come up slightly (arched over the back) and another where they wrap around the body and even in applying certain amounts at certain times the translation appears correct at all times.

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Alienware Aurora R16, Win 11, i9-149000KF, 3.20GHz CPU, 64GB RAM, RTX 4090 (24GB), Samsung 870 Pro 8TB, Gen3 MVNe M-2 SSD, 4TBx2, 39" Alienware Widescreen Monitor
Mike "ex-genius" Kelley