On Windows 10, using Illustrator 24.0.2.

When I create saved selections in one document, select all, and copy into a new document, I expect the same saved selections to be in the new document.

Instead, the saved selection names get mixed up randomly. So saved selection "Back" now might actually select what I had named "Pocket", etc.

(There is a perhaps related "bug" that when I duplicate an object that was in a saved selection, the new object is also in that saved selection, which is not what I want. But I haven't been able to find enough documentation to determine if that is, in fact, a bug or an intentional feature.)