Mixing : Mixdown : Recording a Submix (with Bounce to Disk)

Recording a Submix (with Bounce to Disk)
You can create a submix with the Bounce to Disk command by muting tracks or bypassing inserts that are not part of the submix, and selecting the part of the session you want to bounce; or, you could solo only the audio you want to bounce.
You can also create a submix by recording to new tracks. For details, see Sample Rate Conversion and Bit Depth Reduction.
To bounce a submix to disk:
1 Configure your submix using sends, Auxiliary Inputs, and Master Faders. (See Signal Routing for Monitoring and Submixing.)
2 Do one of the following:
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To bounce the entire session, click Return to Zero in the Transport window to go to the beginning of the session.
– or – 
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To bounce a portion of the session, enable Options > Link Timeline and Edit Selection, and make a selection in the Edit window.
3 Choose File > Bounce to > Disk.
4 Configure bounce options and settings.
5 Verify the bit resolution for the bounced file matches the bit resolution of the session.
6 Verify the sample rate for the bounced file is supported by the session and the audio interface.
7 If required, verify the file type and format for the bounced file matches the file type and format of the session.
8 If you want to bring the bounced file into your current session, select the Import After Bounce option.
9 Click Bounce.
10 Select a destination for the new audio file, enter a name, and click Save.
Pro Tools bounces are done in real time, so you hear audio playback of your mix during the bounce process. You cannot adjust controls while bouncing to disk.
To bring bounced files back into tracks:
1 Do one of the following:
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If the newly bounced audio was automatically imported into the session, drag the new files from the Clip List to existing tracks in your session.
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If you bounced from a selection point, you can snap the file to the bounce point: Start-drag (Windows) or Control-drag (Mac) the clip from the Clip List to the destination track.
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If the bounced files are not available in the Clip List, import them into the session with the Import Audio command, or drag and drop the bounced files from a DigiBase browser.
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If you are placing multiple files, keep channels time-aligned with each other by Shift-selecting them in the Clip List, and dragging them simultaneously into existing tracks of the correct format.
2 When working with stereo tracks, set the Pan controls hard left and hard right.
3 Solo the track with the bounce on it.
4 Click Play in the Transport to hear the results of the bounce.