If you are going to splice then you need to ensure continuity of the sheilding.
After repairing the core its important to insulate the core from the sheild, looks like mesh, and repair the sheild if not useing a mechanical co-axial connector.
These have two ends, the core is exposed to push into the fitting on both sides and the co-axial sheild is held by the locking nuts and the sheilding is restored.
The great appear great because you are on your knees. James Larkin, Irish Labour Movement.