Aperture: RAW Converter 2.0 Ate My Yellow

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RAW 2.0 on the left, RAW 1.1 on the right. What happened to my yellow?

That's a screen shot of a zoomed-in pair of versions of the same master. That's a startling difference. Neither has been adjusted in any way. And I was unable to get the yellow back without affecting the rest of the image. That may be my lack of understanding of the myriad controls, but I thought it would be straight-forward.

Update: The consensus among the comments is that RAW 1.1 is the culprit here and that I should be glad the bug has been fixed.

I am also noticing that Aperture now sharpens thumbnails. That has the effect of making some images look harsher than they really are when viewed in the browser. Again, RAW 2.0 on the left, RAW 1.1 on the right:
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But RAW 2.0 does better on the highlights by default.
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