Has anyone had any luck successfully mirroring the Acom character FK / IK limb poses ?

To be specific, using the pose tool on fingers (as shown in the Acom tutorial demo) fingers mirror without issue. When trying to Mirror a full IK / FK Limb such as Arm / Leg, the rig explodes. You get anything but the correctly mirror’d pose using this tool.

Since Acom is a Modular built rig, and I’ve tested with all the mirror settings, just FK, just IK with no luck, is this an issue with the Acom modular rig or why won’t it work?

See Below the results for creating the pose with R leg 3 FK controls,

and then pasting to the L Leg 3 controls Mirror’d