#authorship 3 articles

• CreateCopyJobs with MoveButKeepSource keeps version history, timestamps and authorship — and how to actually prove itgotchas / rest-apiThe server-side Copy and Move job preserves all versions, Created/Modified and Created By/Modified By, leaves the source in place, and is callable from the browser under delegated auth; omitting AllowSchemaMismatch is…
• Created/Modified on a document library won't stick — and the API says 200 while ignoring yougotchas / listsA plain MERGE reports 204 and SharePoint overwrites both with "now"; ValidateUpdateListItem + bNewDocumentUpdate is the only path that holds, it wants the web's locale format (the error message tells you which), reads…
• Migrating list items with original authors, dates — and their version historygotchas / listsCopy and Move does not do lists, but REST does the job item by item — AddValidateUpdateItemUsingPath takes Author, Editor, Created and Modified at creation (one call, one version), version history can be replayed with…