Update: I may have to rephrase / replace my question:
I performed a little experiment and I created a new anim blueprint afresh using the specific original skeleton of the crouch animation I’m using. (MoCap Basics for Mr Mannaquin - free on Marketplace). What I have done earlier is I took the animation, imported it in my own template, deleted the skeleton that the MoCap animation started with and retargeted it to Mr. Mannequin of my template. Somehowit has messed up his ability to detect collisions when uncrouching… thoughts any one?