I've had this and it annoys me because I would like to get shutter bug on some Sim at some point, the only way I can think of to deal with it is to deliberately not complete any collection until you've got all the traveling required pictures (even the travel collection has a couple of shots you can take back home as far as I recall), basically just leave one easy to get shot un-taken in each of five collections and only take them when you can complete all five without traveling, then either don't travel again or hope that once the challenge is achieved it stays achieved regardless of the resetting. I haven't actually tested this but I think it should work.