When I need to transpose a section of the song, here's how I usually go about it:

1. Select the bars I do not want to transpose with my mouse and hit cmd-c.
2. Then I transpose the whole song (simply because that's the only transpose we got, grr!) to the key I want the transposed section to be.
3. Then I select the same bars as I did in step 1 and hit cmd-v.

Bingo! smile

And if I then also need this to look prime & proper in notation, I just go to the bar settings at the key change bar and adjust the key to match.

Just because you can, doesn't mean you should!
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BBox 2022 Audiophile, Mac Pro Intel, OSX 10.6.8, 800x600 (TV VGA)