This is from the FAQ section from my installer...
Clear bra Frequently Asked Questions - FAQ
Q: Will Paint Protection Film harm the painted surface if the film is removed?
A: If the film is properly applied to a fully cured painted vehicle, it can be removed without damaging paint surfaces beneath the film.
Warning: If the paint protection film is applied to a repainted, older or not properly cured paint there is a slight risk of the paint being peeled off.
Q: Can Paint Protection Film be applied over a vehicle that has had the paint touched up?
A: We recommend that any repainted surfaces on your vehicle be professionally painted and fully cured before applying paint protection film. If the paint protection film is removed, it is possible that any incorrectly touched-up or painted areas could peel off. The film will protect the area until the film is removed.
Q: Will the paint smear if Paint Protection Film is applied over a newly painted vehicle?
A: The paint on a newly painted vehicle must be cured according to manufacturer's recommendations. Your body shop should be able to provide you with this information.
Q: Can you paint or apply a clearcoat over the Paint Protection Film?
A: No, this is not recommended and is at your own risk. Film is supplied with an OEM-approved clearcoat which is not formulated to be over-printed, painted or clearcoated.
Q: Can I cover the whole vehicle with Paint Protection Film?
A: It is possible, but the application may be difficult and expensive. This product is really intended for the most vulnerable areas of the vehicle. If you really are considering having most of your vehicle covered, please take a look at the Porsche GT3 example on this page. The entire car was covered with the 3M clear bra material. It is possible, your entire car is
protected!