Making customers inactive seems perfectly logical when they're no longer your customer. However, it is not possible to do this if you've used projects to track income and expenses for the work you did for that customer. If there are ANY projects assigned to a customer (completed, canceled, or otherwise), you'll get the following message when you try to make the customer inactive: "Can't make customer inactive. You need to delete the projects linked to the customer before you can make it inactive." Just how dumb is that?? I went through the trouble of tracking everything at the project level for very good reasons. I don't want to lose that. I just want to make the customer inactive. I can always "revive" them later if they become a customer again. You shouldn't have to change your accounting in order to make a customer inactive.