Issue
After converting characters, old animations play incorrectly or not at all.
Cause
R6 and R15 use different rigs, joints, body-part names, and animation assets.
Fix
Treat conversion as a rig migration, not a model rename. Re-export or retarget animations for the correct rig, update body-part references, and review scripts that assume six parts. Test tool grips, seats, emotes, and character replacement systems.
Verify
Run every locomotion and gameplay animation on the final avatar type with multiple body scales.
Official Roblox 2024 creator roadmap
#1
Original Heliotrope guidance with authoritative Roblox sources.