It would be great if it could be fixed where reflected spells cast on a province would not show up on the espionage tab as that province having the spell active. Things get confusing if you miss that it was reflected or if someone else did it and you were not aware.
Also as a second point from another forum post, it would be better when casting Mystic Vortex, and it evaporates without clearing a spell, it came back as a failure rather than a success if that province has active spells. Earlier I cast it on an orc to clear reflect and it worked but evaporated, next spell I cast ms and it was reflected (then showing it was active in the espionage tab).
Maybe have a slightly lower chance of clearing spells as long as if it succeeds it would clear at least 1 spell, removing some of the randomness involved.