The situation I have encountered in a sizable assembly with a large amount of Top-down Parts, which are swept 3D sketches (hydraulic tubing), and the 3D Path sketch, Profile Sketch, and Plane, are all constrained to a common part used multiple times( Hydraulic Fitting).

I need to change the Part (Fitting) but it is not editable as it was an imported STEP file

Is there a way to replace this Part ( Hydraulic