CloudKit records not deleted when removed from iOS app

For an unknown reason, when I delete a record in my app, the CloudKit record does not delete. So the next time the app runs, the "deleted" records come back.

I add the records as follows:

func addReadingListBook (book: NYTBook, list: ReadingList) { //set it var bookToAdd = RLBook(nytBook: book)! let parentReference = CKRecord.Reference(recordID: list.recordId!, action: .none) bookToAdd.parentReference = parentReference //needed for query bookToAdd.record.parent = parentReference //needed for sharing myReadingListBooksDictionary[book.primaryIsbn13] = bookToAdd Task { do { // Save the RLBook record first let savedBookRecord = try await db.save(bookToAdd.record) // Persist related buy links as child records in CloudKit (if any) if let links = book.buyLinks, !links.isEmpty { var buyLinkRecords: [CKRecord] = [] for link in links { let buyLinkRecordID = CKRecord.ID(zoneID: savedBookRecord.recordID.zoneID) let buyLinkRecord = CKRecord(recordType: "BuyLink", recordID: buyLinkRecordID) buyLinkRecord["parentReference"] = CKRecord.Reference(recordID: savedBookRecord.recordID, action: .deleteSelf) buyLinkRecord["bookIsbn13"] = book.primaryIsbn13 buyLinkRecord["name"] = link.name buyLinkRecord["url"] = link.url buyLinkRecords.append(buyLinkRecord) } if !buyLinkRecords.isEmpty { _ = try await db.modifyRecords(saving: buyLinkRecords, deleting: []) } } } catch { Logger.errorLog.error("\(error.localizedDescription)") } } }

I delete the record like this:

func removeReadingListBook (book: RLBook) { myReadingListBooksDictionary.removeValue (forKey: book.primaryIsbn13) Task { do { // Delete related BuyLink records for this book let parentRef = CKRecord.Reference(recordID: book.record.recordID, action: .deleteSelf) let linkPredicate = NSPredicate(format: "parentReference == %@", parentRef) let linkQuery = CKQuery(recordType: "BuyLink", predicate: linkPredicate) let linkResult = try await db.records(matching: linkQuery, inZoneWith: book.record.recordID.zoneID) let linkRecordIDs: [CKRecord.ID] = linkResult.matchResults.compactMap { try? $0.1.get().recordID } if !linkRecordIDs.isEmpty { _ = try await db.modifyRecords(saving: [], deleting: linkRecordIDs) } // Now delete the book record itself try await db.deleteRecord(withID: book.record.recordID) } catch { Logger.errorLog.error("\(error.localizedDescription)") } } }

I have checked role permissions and everything else I can think of or find on the internet. Any help would be appreciated.