You can copy and paste comments from one clip to another from within the player page.
Because Frame.io does not carry over new comments within version stacks, copying and pasting comments is the best way to bring previous feedback notes to a new version or to a copy of the same asset.
Open the clip in the player page, click the down arrow shown above your active comments, and select Copy. This will copy the comments to your clipboard, and you can paste them into another clip:
The Paste option will populate any asset outside of the source. Open a new asset and select Paste. All comments will now show at the same time codes and will include all comment annotations.