Recreate the PowerPoint from Published Course

I have several courses with all of the published course files, but they were published to the WEB.  I now need to publish the courses to the LMS.  Unfortunately, the original pre-publish PowerPoint Articulate file with narration and sync'ed animation was not retained and the computers were stripped and repurposed, so there is no way of recovering the pre-publish PowerPoint Articulate file.

Is there a method by which I can take the published course files and recreate the pre-published version so that I can publish the the LMS?  Or, is there a way of taking the WEB version and converting it to an LMS version?

Thanks for your help.

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