Capture noise print (shift-P) does not work unless Noise Reduction Effect module has been opened first
This has been an issue for as long as I can remember, but currently with OS X and Audition CC 2018 11.0.0.199.
Basically, upon launching Audition and opening an audio file, I am able to select a portion of audio, then press Shift-P to define an audio print, however when I open the Noise Reduction effect module (Cmd-Shift-P) and preview or Apply the settings the resulting processed audio has not changed. I have to re-define the noise print in order for it to work.
Note- If I first launch the Noise Reduction module (Cmd-Shift-P) and then capture the noise print after that, then it will work. Every subsequent use of Shift-P works after the module has been loaded the first time.
I would really like to have the program successfully capture the noise print I define the first time when I type Shift-P, without having to open the effect module first.

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Mike Buckhout-White commented
Update - this appears to be fixed in 12.1.1.42 (CC 2019), doubtful due to this request but I am thankful all the same!
Durin, to answer your question- I did not see the popup window indicating the noise print was captured because I had previously checked the "Don't show this alert again" option. And yes, opening the Noise Reduction effect immediately afterward showed the graph and not a message about no noise print. As noted above this seems to be resolved in the latest version, but thanks for your reply.
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When you try to define the print first, do you see the popup window indicating the noise print has been captured? And opening the Noise Reduction effect immediately afterward shows you the graph of the recording and not a message that there's no noise print?