FBX Advanced Settings - Add Reference Pose Section

• Add Reference Pose: Appends a reference pose as an additional motion clip at the beginning of the exported file. Programmatically, this appends the corresponding rlMotion data into the initial animation segment rather than modifying the raw skeletal data. It functions essentially as an embedded reference pose animation within the FBX.
• T-Pose for Unity: Inserts 0_T-Pose.rlMotion to establish a standard T-pose as the reference pose. This version is tailored for Unity-based pipelines to help external tools align the bind pose with the character's forward orientation.
• A-Pose for UE4 Skeleton: Inserts the Open A-pose motion tailored for UE4. This aligns with Unreal Engine 4's default skeletal pose requirements, ensuring consistency between the skeleton and the imported reference asset.
• A-Pose for UE5 Skeleton: Inserts the Open A-pose motion tailored for UE5. Similar to the UE4 option, this utilizes the UE5 version to prevent skeletal pose mismatches.
• A-Pose for UEFN: Inserts the Open A-pose motion tailored for UEFN. This provides a dedicated reference pose pipeline for Fortnite and Unreal Editor for Fortnite (UEFN).