Human beings have always forgiven people throughout history so why not forgive the Austrians? It's been more than 80 years since the region was ceded to Italy after World War 1. Even though Austria and Italy decided to end this dispute in 1992, Austria still have a claim on it so I think it would be in the best interests of the Austrian people that thier land be returned!
Source: http://en.wikipedia.org/wiki/South_Tyrol#History