Help with Global Transfrom copying across child of constraints

[shooterAnim8or]

I am attempting to copy a bone’s transform from before a child of constraint has been turned on (Influence at 0) to AFTER the constraint has been turned on (Influence at 1), but it is not working.

What do I do in order to copy the transform without it being affected by the constraint?
I do not want to change the bone setup because I have already made animations with it.

By the way, I am new to this website.

Feel feel to ask any questions.

[Hadriscus]

As of now, you kinda have to duplicate the bone in question, remove the constraint, and target this new bone instead.

[shooterAnim8or]

I do not want to change the bone setup.

[shooterAnim8or]

(post deleted by author)

[shooterAnim8or]

btw the rig is Low-poly Viewmodel Arms V4 for Blender by Hozq