Sessions & Tracks : Importing and Exporting Session Data : Audio Conversion on Import : Importing Interleaved Files

Importing Interleaved Files
When using the Import Audio command, interleaved stereo files are automatically imported to stereo tracks. With Pro Tools HD and Pro Tools with Complete Production Toolkit, greater-than-stereo multichannel audio files are automatically imported to tracks with the corresponding multichannel audio file format.
If the Interleaved option is enabled for the session, or is enabled on import, interleaved files are imported to the session and remain interleaved files. If this option is not enabled, interleaved files are split into multi-mono.
Conversely, split stereo (dual mono) audio files can be automatically imported to stereo tracks. Split stereo audio files must have the channel identifiers “.L” and “.R” in their names (for example, filename.L and filename.R), and the files must be the same length. In Windows, or in Mac/PC Compatibility mode, these files will have a 3-letter file extension appended after the “.L” or “.R” channel identifier.