It does raise the question how does the Church knows who is in heaven and who is in purgatory?
The causes for the saints is a matter of careful study of the purported miracles associated with the saint, and evidence of the probity of his faith. Until the Vatican examines the case, we do not know. In the vast majority of people who go to heaven no proposal for canonizaion is made, no inquire is made, and no knowledge exists. This is why it is good to pray for all dead.
yet Jesus said, Let the dead bury the dead. There is no scripture that ever said to pray for them. They snooze, they lose.
annalex, I really, really hope you begin to read what scripture has to say about all this. Priests and Popes are only human and they are NOT infallible. They have no right to decide who is in purgatory or who is in heaven. Only God has that right.