Eliminating the backward play in a SWF export of Manipulate

I find that the Export of Manipuate contains backforward play, see a simplified example:

Export["try.swf", 

 Manipulate[
  Plot[Sin[2 x + φ], {x, 0, 10}], {φ, 0, 2 π}]]

You can see the problem in the SWF file.

Is there any simple way to get a animation with only forward play?

Note that the problem in the the Export command. Indeed, Manipulate does the job (no need to specify AnimationDirection -> Forward).

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