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Export the database and query the content tables for anything matching (*) if you just want to find them. To auto cleanup, I'd suggest creating a job that does the same either direct or you could use Search & Navigation then move the items to trash. You could log any found too for review or just check the trash folder after
In creating International pages, content has somehow gotten duplicated - images, blocks, and pages get created with (2) (3)? And the pages end up showing in the search? How can we find duplicates and clean up?
Also, what is the guideline on creating international pages so that there are no duplicates?