Animation different in moon editor versus in practice

[sagathian (vampthian)]

what do i want to achieve:
fixing this bug

animation is different in moon versus in practice
heres the link:
https://streamable.com/i2mziq

what solutions have i tried?
i’ve tried disabling the idle animation, thinking that the weight is a problem
i’ve tried this https://www.youtube.com/watch?v=x1y5nk3BhlI

extra details
it’s in moon
i don’t think i’ve had to change any properties of the sword dummy
the reason there is a ‘CLOSE MOON BEFORE STUDIO’ is that moon will bug and leave your dummy in the last position of the animation when you close studio before moon, this ruins animations on that dummy and is highly annoying

[sagathian (vampthian)]

figured this out incase anyone has this very niche problem

problem was with motor6d’s
more specifically the right arm one
turns out, normal right arm motor6d connections are rotated 90 on the y axis (i think its y axis, cframes are swapped in some axis iirc)
so a 0,90,0 is normal
however if you get rid of that 90 degrees on both C1 and C0, it’ll look like a normal arm, leaving the problem ‘semi-invisible’

my rig that i animated on had this nasty fault
therefore the anim was wrong

some pictures explaining
correct rig:

incorrect rig:

(ignore the welds, idk how they got there and they’re deleted)
how they both show up: