Dear all,
I have been researching this topic extensively but have so far come up only with contradictory information; perhaps one of you would be willing/able to weigh in. I have a friend coming to visit me in Italy from Russia (with Russian citizenship) - he was a student in my university but graduated last semester - and he wants to make absolutely sure that he will not have problems to revisit the country for a couple of days. His type D multiple-entry visa is still valid, but his PdiS expired on February 2 (no plans to renew since he graduated). I have never heard of the visa being valid for longer than the permesso, so I cannot tell him with absolute certainty whether he will have issues at passport control. Any input would be most welcome! Grazie mille!