Track Missing AUP Project File

There’s A Track missing in AUP and Audacity goes into "Importing AUP project files. See pic.
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But the Importing files doesn’t do any good. See Pic 2

A legacy project is one AUP file and one matching _DATA folder.

It was a common problem that the AUP project manager text file would be missing or damaged. It’s sometimes possible to bring back a clean recording under those conditions, but almost never an edit.

Even Jademan gave up. It’s the main reason Audacity doesn’t save projects that way any more.