Finally I found that for creating custom animation path there is need character animation "in place" without built-in walk moving. After that it works fine with your Connect solution. Thank you very much HappyPolygon. Simple Connect resolves my many days headache about this. I tried "in place" animation before but without Connect it didn't work.
But it has serious limitation. It doesn't work for animations where character has different speed movement during animation.
custom_character_path.avi
First of all your mesh and skin objects are lost in another universe... how did you do that ?
After that I had to think like a game dev... so what do they do ? They put their animation meshes inside an invisible box and have the box just move, no bones no deformations. I did the same thing with just a Connect
Is this OK ? character_path HP.c4d