Recommended Order
Pose Overlay Stack
-> project pose work that should affect followed FK
-> Pose Overlay IK Targets
-> project procedural IK
-> Output Pose
Why Order Matters
Runtime Follow modes copy from the final composed source visible at the IK Targets stage. If another stage changes that source after the mapping already ran, the target will no longer represent the final pose. Grip constraints solve only after all mapped targets have been finalized.
One Final Pass
Runtime target following and grip solving run once after the complete overlay composition rather than once per State. This lets stacked States and relevant upstream project pose work resolve before the node establishes final contact.
Validation
Invalid source, target, or driven bones; driven bones without a valid two-parent chain; duplicate target or driven-limb ownership; and mapping cycles must be corrected before synchronization. An unreachable target clamps to the limb’s available reach unless stretching is explicitly enabled.
Debugging
If a target appears one stage behind, temporarily remove downstream project IK and verify the target immediately after Pose Overlay IK Targets. Then restore project IK after the Pose Overlay mapping is proven.