well, I had the EXACT same issue about a month
ago on my M3...only with Mystery.
In fact the error was that I let it dry too long. That is the mistake you can't afford to make with these waxes. They cure fast, and they cure HARD!
okay, unfortunately like it or not...rubbing your paint any harder than light pressure (i.e. putting tons of pressure on it to buff off the dried wax) WILL leave micro marring.
at least it did for me...doesnt that just bite? All i did was try to wax my car and i ended up screwing the whole thing up! Well, I re-machined, re-SV cleaner Fluid'd, and re-mystery'd (this time with a foam applicator applying thin amount and buffing after 15 minutes panel by panel)
HERE'S THE HARD LESSON I LEARNED: its not only imperative to have clean tools (applicators and new soft MF towels) but also you MUST use correct techniques to the "T" or else you can kiss your flawless finish goodbye. ALSO NEVER try to do anything to your car unless you have at least twice as much time that you NEED on hand so that you can get the results you WANT
OH and btw...SV cleaner fluid would've removed it really easily. I had missed wax and let it sit for more than a month and a quick swipe with SV Cleaner Fluid and the wax was gone. If only I had known that before i let a coat of mystery dry on my car for an hour. oh well.....