To be clear, the point here is that if you submitted two applications with different information, they're going to wonder what is going on and whether you are lying - simple as that. This would be an irrelevant lie (doesn't help you) so mostly it may not matter, but lead them to believe there's some other problem.
We don't know what you submitted before, we can only guess. There are two places where you could have put info about your master's, the part where you provide info about education, and the biographical part saying what you were doing.
So: fix it. Make it clear. As I said, it's probably not a material difference, you weren't going to get any advantage in either case. And you don't need to go into detail about why your master's was traumatizing or whatever - it's irrelevant to your spousal sponsorship. You started a graduate program and decided not to finish it, you're not the first.