Yoper - another good question to be added to the rules.
Currently, the rules state:
Upon Italian Surrender, all Italian units are removed from the game and the Italian Fleet is scuttled and removed. Accumulated Italian production points are eliminated. Italian territories are treated as neutrals for the remainder of the game. If German forces occupy Italian territories, production points for those territories would be added to German production point total just as any other occupied territory and are counted normally as captured enemy territory for the remainder of the game (the German player would have to keep a ground unit in the territory to get the production point value from it). Given that Italian territories are treated like captured enemy territories once Italy surrenders, the Italian factory would be considered damaged. Same thing goes for France if they manage to build an additional factory.
. . .I guess the damn Italian partisans do their damage before Albert Speer can arrive to change the manufacturing lines over to German equipement. . .