You could do a Memorize All on frame 30, then go to frame 1 and Restore All.. And then delete the other frames, once everything from frame 30 has been "copied" to frame 1. It should work, though I must admit I've never tried it with dynamics.

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You just can't put the words "Poserites" and "happy" in the same sentence - didn't you know that? LaurieA
  Using Poser since 2002. Currently at Version 11.1 - Win 10.