PhysicalAnimation after RetargetAnimation doesnot have Self-Collision, all are same with 1.4 in PhysicalAnimation in Content demos

PhysicalAnimation after RetargetAnimation doesnot have Self-Collision, all are same with 1.4 in PhysicalAnimation in Content demos.
All are same, except the SkeletonMesh is imported FBX and the animations are Retarget-Maneger from Manniquin.
But, 1.4 in PhysicalAnimation map in Content is OK, when the PhysicalAnimationStrength is nearly 0, the left arm has Collision with the legs which is simulated Physical under BoneName spine_01. (please see the middle character in 1.4)
As for my imported model…neally all the settings are the same…but the arms dosenot have collision with the legs…