You should have received a letter from the MSP stating you were not, not, un-disapproved.
When you get your letter, make 10 copies of it and kept the original, plus your extra copies in a folder with your gun related files. That way, you won't be posting on here how to get a copy of you DC letter, 3 years from now, like so many have. I keep a copy in my wallet, but I can't remember any dealer ever asking to see it.
Letters get lost. MSP doesn't have a great track record of great record keeping. Who knows how they back up their databases. They still might be using Lotus Notes for all we know.
Remember the boxes of 77r's stacked in a back room before FSA 2013 became effective? Allowing uncleared persons to share database logins?
Make a copy. It isn't hard to do.