I asked about how to remove trim over windshield. My question should be can the outside trim over windshield be reused after removing to stop windshield leak.

I don't know about your Mitsubishi but generally windscreen trim is laid loose around the screen and theoretically can be reused. In practice the windscreen adhesive bead usually spreads and catches the trim in places effectively placing an element of doubt over the fact.
If a new trim isn't readily available or is prohibitively expensive, as long as care is taken to leave the visible part undamaged when cutting out the old screen or removing the trim the windscreen adhesive is so good it will bond even damaged trim and can be held securely.

One problem with reusing trim is when attempting to refit it will often be found to be too short. Contaminants from the atmosphere and UV exposure does tend to alter the properties of plastic. Once the trim has been removed shrinkage can sometimes be severe and rapid.

Windscreen water leaks should be none-existent with bonded screens but when windscreens must be replaced the fitters usually manage to scratch the paintwork in the screen recess and have no time or will to repaint. The adhesive bead rarely covers the exposed steel and as the trim is not designed to keep water out rust soon begins to attack and eventually destroys part of the windscreen bond and even sometimes eats through the steel into the windscreen pillar or roof.