Sessions & Tracks : File and Session Management and Compatibility : Sharing Sessions Created on Different Pro Tools Software Versions : Opening Pro Tools 7.2 or Higher Sessions with Pro Tools 7.1 or 7.0

Opening Pro Tools 7.2 or Higher Sessions with Pro Tools 7.1 or 7.0
A Pro Tools 7.2–9.x session without video tracks or VCA Masters can be opened with Pro Tools 7.1 or 7.0, but certain session components open differently or not at all.
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When opening a Pro Tools 7.4–9.x session with Pro Tools 7.2, 7.1, or 7.0, you are not warned that not all session components will be available.
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Sessions created with Pro Tools HD 7.2–9.x that contain video tracks or VCA Masters can only be opened with Pro Tools HD 7.1cs3 and higher.
When opening a Pro Tools 7.4–9.x session with a version of Pro Tools 7.1 or 7.0 the following occurs:
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All that occurs when opening a Pro Tools 7.4 or higher session with Pro Tools 7.3.x or 7.2.
Tracks
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VCA Master tracks are removed and any uncoalesced VCA automation is dropped.
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Groups
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Mix/Edit Groups keep only Main Volume and Automation Mode information.
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Group behavior of Solos, LFEs, Mutes, Send Levels, Send Mutes is not preserved.
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Video
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If the session contains QuickTime movies in the Clip List but no video track, the session opens with a new QuickTime Movie track containing the first QuickTime movie from the Clip List.
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The Timeline displays and plays back only the video playlist that was last active. Alternate video playlists are not available.
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