Yea, I know, been on both sides of stuff, and didn't work right from either direction.
I've pressed legitimate charges twice, both times w/o a satisfactory outcome, and I've had false charges pressed against me twice, and the record of it never goes away even if they expunge the record (the FBI still has it on file).
Took forever, both times, to finally get the charges dismissed, and then I had to go through the ordeal of reinstating my pistol permit. You would think that if the Judge concluded the record should be expunged, that they would just automatically give it back to me, but no!