@Nairam @chaituprince
It’s for mirroring animations.
The current way I’ve been doing it is prone to breaking, and can corrupt animation data. The setup up I created in blender was a really long and laborious workaround, it works but it’s no good for batch exports, the is that the animations and corrupt on export and takes days to debug what went wrong. (since the set-up I did was very hap hazard with no reference, it’s like no one on the internet ever needed to mirror animations in blender that’s why there’s no published batch method yet lol.)
The plug-in I’m waiting for is a UE4 plug-in that takes care of this, and it’s close to releasing soon, and will reliably convert everything without interference from blender.