In the Saintsbook, there's a list of challenges to complete throughout the game. Pierce wants me to rob 15 stores for one of them. However, I'm wondering if this is a challenge I need to complete earlier in the game rather than later, before I have purchased most, if not all, stores in the game.
To that end, I'm wondering if I can rob my own stores after I've bought them and have them count for the challenge, or if I have to rob the stores before I buy them?