The Duplicate plug-in duplicates the selected audio in place. Depending on how its controls are configured, the new clip will appear in either the Clip List or playlist. You can use this to flatten or consolidate an entire track consisting of multiple clips into one continuous audio file that resides in the same place as the original individual clips.
The audio is unaffected by Pro Tools volume or pan automation, or by any real-time plug-ins that may be in use on the track as inserts. The original audio file clips are merely rewritten in place to a single duplicate file.
The Duplicate plug-in works nondestructively. You cannot choose to overwrite files.