[Bug/Exploit/Fix Suggestion] Infinite money with career mode

[zenopath]

If this has been posted before, i apologize, but it seems worth posting about...

In certain situations it is possible to get certain missions to repeat. What i discovered is that if you have a ship in orbit around kerbin it is very easy to exploit the "get science from space around kerbin" mission. Completing that with a quick "crew report" and "transmit", then you exit to space center and check the missions. By clicking decline a few times you are going to get the option of doing the "get science from space around kerbin" mission again. Do the "crew report/transmit" thing, then go back to the mission center. This exploit probably works for any easy to do mission, just have ships in place and you could spam transmit science from anywhere.

You get the idea.

(Suggestion) While KSP is more of a sandbox than a real game, this simple exploit is a bit obvious. Missions should definitely not be offered again if you have recently completed that same mission. I get that having a way to "grind" cash is important if you want let players who refuse to revert crashed ships (or play on hard) a chance to build up their cash again, but it probably shouldn't be this easy. Just a thought.