Sessions & Tracks : Importing and Exporting Session Data : Importing Files with Drag and Drop : Elastic Audio on Import

Elastic Audio on Import
When importing any audio file by drag and drop to an Elastic Audio-enabled track, the audio file is imported and analyzed (if not already analyzed). If the imported audio file is tick-based, it is conformed to tempo using the track’s Elastic Audio plug-in. If it is a sample-based audio file, such as a single drum hit or short sound effect, it maintains its original duration. Longer audio files with no detectable tempo also remain sample-based.
You can also import audio by drag and drop to create new tick-based Elastic Audio-enabled tracks.
When importing tick-based audio by drag and drop from DigiBase browsers to the Track List or empty space in the Edit window, Pro Tools creates a new tick-based, Elastic Audio-enabled track using the default Elastic Audio plug-in selected in the Processing Preferences page (see Elastic Audio Options).
If you are importing an audio file by drag and drop from Windows Explorer or Mac Finder to the Track List or to empty space in the Edit window, files are imported as sample-based or as tick-based Elastic Audio depending on the Drag and Drop from Desktop Conforms to Session Tempo preference (see Drag and Drop From Desktop Conforms to Session Tempo).