From what I hear restoration is intended to airworthy condition, operating passenger flights.

ClassicWings is a Netherlands based company that operates classic aircraft (An-2, mostly). On their website (http://classicwings.nl/hetbedrijf/) they say (translation): “August 2013 we started a restoration project on a DC3. This aircraft, a war veteran, will be brought back to flying and original condition. However, this will be a multi-year project.”
On the same page they state that they are the only company (along with the Dutch Dakota Association) in the Netherlands with a permit to operate regular passenger flights, both nationally and internationally.