Editting narration text

I imported a PPT file into Storyline which contained speaker notes. The notes were used as a script to record the audio. The notes now appear in the narration pane in Storyline which is great.  However, the client has made changes to the audio so I would like to update the narration pane text to match. Is it possible to edit the narration in Storyline without updating the PPT file and importing the slide again? Thanks!

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