This explains A LOT.

Helena Bonham Carter, from EW:

There were bits of footage of you in the coming attractions and in TV previews that showed you dueling with Gary Oldman’s Sirius, and also taunting Harry. But those seem to be missing in the final cut of the movie. What happened?
I had a duel with Sirius, during which he makes a strategic mistake. I learned for three weeks how to wand-fight. And I was really good with all my spells! It was really complicated stuff. And then they cut the fight! They just cut it. I can’t believe they cut the fight. All that wand training for nothing. And a wand blister. I told the [producers and director], ”You’ve got to put that in the DVD extras.” I did learn to do my spells. And it’s a good fight, too. I stuck my tongue out at the end.

I can’t believe they cut it, either.

Assorted notes on Phoenix:
— Casting continues to be marvelous. Umbridge was fantastic. Bellatrix, delicious. Kreacher, perfect. (Okay, so CGI cast him, but it was still impressive.)
— The adults are fantastic. The kids… with the exception of the ever-improving Daniel (Equus?!) Radcliffe… need some work.
— Michael Gambon as Dumbledore was much, much improved. But I’m still not sold on him.
— Much of the plot is delivered through flashes in Harry’s mind and covers of The Daily Prophet, which was preferable to Harry’s somewhat cheesy breakthrough on the floor of the Ministry atrium that served as the “tying up loose strings so that we can end it” moment.
— Ministry battle in the Hall of Mysteries was weak. Sirius’s death is so sudden it almost doesn’t make sense… takes away from what a powerful moment it is for Harry and the Order.
— In my brain, her hair is spikey. But I still loved Tonks.