Those items you see in the list in your screenshot are Label Favorites.
You can start a brand-new AC22 Project and export those Favorites, then import them into the other Project.
By the way, they are pretty simple, they are Text/Autotext Labels. The Labeling command places an associative label to all Tread of the Stair, and uses the "Step Index" Autotext to display the Step Index of the labeled Tread. So it could actually be done manually, labeling each Tread one by one, but the labeling command does in it a single step.
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