Hmm, well, if it was commented in the. Bodyconv file, odds are good it was done post UOSE as commenting in that file wasnt really done much before then. And an I'd in th bodyconv file doesn't necessarily mean that there was a unique animation for it.
I've been through every animation in the legacy client and I've never seen it, but that doesn't mean that it wasn't removed prior to my browsing the animations, nor does it mean that I didn't just flat out miss it!
Cheers!
Grimm