Help with animation retargeting

I have been struggling for awhile with getting a character to animate retargeted from the UE 5 skeleton (specifically I’ve been using SK_Quinn_Simple as the source). I have a skeleton that works for another character, and I manually re-mapped the new character to that new skeleton (it still needs some vertex weight adjustments on the clothing, but I’m back-burnering these until I can actually get the mesh to animate at all), so I know the skeleton isn’t the problem. I adjusted the IK rigs manually, and the animations look fine in the retargeter preview, but I can’t get them to work in runtime.

Currently I have the character blueprint set up with SKM_Quinn as the parent and my new character as the child. I created an animation blueprint for my new character that is just “Retarget Pose from Mesh” and selects Parent Skeletal Mesh and the retargeter that works in preview. The error message I keep getting is “Source was visible but ignored.” For the parent mesh, I’ve tried ABP_Manny_Combat and ABP_Unarmed, and both of them work for the parent mesh but don’t retarget to the child mesh.

What am I doing wrong?