MetaHuman 5.6 Asset Changes | MetaHuman Documentation

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Body Rig Changes

Change	Affects	Notes	Revert Solution
Changed hand_l/r joint orient.	Maya Body Rigs for 18 fixed body types.	Made the joint planar with the rest of the arm rig.	Set the joint orient to previous value based on body types that are being used.
Changed finger joint orients.	Maya Body Rigs for 18 fixed body types.	Made the entire finger joint chain planar, from metacarpal to last knuckle (dip).	Set the joint orient to previous value based on body types that are being used.
Changed joint orient on surface corrective joints: `clavicle_pec_r` `spine_04_latissimus_r` `ankle_fwd_r` `ankle_bck_r`	Maya Body Rigs for 18 fixed body types.	Created a mirrored joint orient from the left side of the rig.	Set the joint orient to previous value based on body types that are being used.
Removed Driver Skeleton.	Maya Body Rigs for 18 fixed body types.	Removed driver skeleton, RBF and Swing/Twist is now on Bind Skeleton — closer to UE standard.
Twist Blend value updated for upper arm twist joints.	Maya Body Rigs for 18 fixed body types.	Values changed in Maya to match with UE values, blending set to 0.8 / 0.2	Set twist blend to previous values for specific character in Maya on nodes XYZ (ToDo).
Swing Blend value updated for Thigh Swing Joints.	UE rigs for 18 fixed body types.	Values changed in UE MH procedural CR to be consistent.	Set thigh_l/r swing blend value from 0.5 to 0.6 on the MH proc control rig blueprint.
RBF pose names updated to have unique names added: Added _l and _r side tags in name.	Maya Body Rigs for 18 fixed body types.	Pose names that did not have _l or _r tag now do have it — all poses are uniquely named.	Rename poses back.
Finger half-rotation system changed to RBF half rotation.	Maya Body Rigs for 18 fixed body types.	Instead of using Maya nodes or SDK to drive half rotation we now use RBF solver for it.
Mesh names changed to adhere to DNA standard: Removed character body type prefix from name.	Maya Body Rigs for 18 fixed body types.	Instead of having a custom name for each body type (for instance `f_med_nrw_body_mesh`) we now have consistent naming body_mesh across all characters.	Rename meshes back to unique name per character.
Lower arm solvers: Removed `lowerarm_in_80` pose.	Maya Body Rigs for 18 fixed body types.	The `lowerarm_in_80` pose exists on some legacy characters, but not on all, creating an inconsistency on all 18 body rigs. The decision we made was to remove it because it was the easiest solution and because we have in_75 and in_90 poses and it had no affect on deformation.	Load the older RBF JSON file with PoseWrangler or recreate the pose.
Upper arm solver — pose rename: `lowerarm_l/r_in_35` -> upperarm_l/r_in_35 `upperam_l/r_ out110 pose` -> upperam_l/r_ out_110	Maya Body Rigs for 18 fixed body types.	Renamed the incorrectly named poses.	Load the older RBF JSON file with PoseWrangler or rename the pose.