I believe the issue came up because there are fears that Italy has a secret Plan B to leave the Euro. The fear is that is that if Italy leaves the Euro, its Euro-denominated bonds will all be converted into Lira-denominated bonds, and that currency will quickly depreciate, leaving the bond-holders with serious losses. Apparently, the candidate for finance minister who just got nixed by the Italian President was bandying about the need for just such a Plan B.