[Rwp] Effects Routing

[Snowman]

Guys,  I need  somebody to splane something to me.
I don't quite understand how Reaper's routing is working.
I have an audio channel, with a pit shift effect on it.
When I play it, I hear both the wet and the dry signal, even though the dry slider is set to minus infinity in the shift+p dialog.
If I go into the i/o dialog, with the i key, and uncheck the master/parent send checkbox, then I hear only the dry signal, not the wet.
I wondered if this track is also going directly to  the sound card output, without the master, but so far can't figure out how to determine that.
Any ideas welcome.  Thanks.

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