System Configuration : I/O Setup : I/O Settings Files : Importing I/O Settings

Importing I/O Settings
I/O Settings can be imported before or after you open a session. I/O Settings are only imported for the current page of the I/O Setup. For example, if you are viewing the Output page and import I/O Settings, only the settings for the Output page are imported. This helps to avoid overwriting your custom I/O Settings on other pages.
When you import I/O Settings, you can choose to delete any unused path definitions before importing the new paths, or leave unused path definitions intact and add the new paths to the current I/O Setup configuration.
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You can also import I/O paths and path names, as well as other session data, from a different session by using the Import Session Data command (File > Import > Session Data). For information, see Importing Session Data.
To import I/O Settings:
1 Click the tab for the page of the I/O Setup for which you want to import settings.
2 Click Import Settings.
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Option-click (Mac) or Alt-click (Windows) the Import Settings button to import settings to all pages of I/O Setup.
3 Select an I/O settings file in the Import Settings dialog and click Import.
4 A dialog appears asking whether you want to delete existing paths. Do one of the following:
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Click Yes to remove any unused paths and add the imported paths to the current I/O Setup configuration.
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Click No to add the imported paths to the current I/O Setup configuration.
If the import results in overlapping paths, the new paths will appear in the I/O Setup as Inactive. See Making Paths Active or Inactive.
After importing I/O Settings, you can then reassign path routing definitions in the I/O Setup by remapping, renaming, and deleting paths. See Pro Tools Signal Paths.