I heard before from a Talmud Chacham that if someone has a yahrzeit and they are unable to go to the kever where the person is buried then there is still and "inyun" of going to a Cemetery on that day. Is there any source for this?
(I heard this on my Grandfathers yarhzeit when I went along with a Talmud Chacham (who was then a Rebbe of mine in Yeshiva) and a friend to Har HaZasim in Yerushalayim on someone else's yarhzeit. I mentioned to the Talmud Chacham that it was my Grandfathers yahrzeit at which he told me this idea of going to another cemetery on the day of a yarhzeit if you are unable to get to the one where the person is buried.)