Swap a scheduled TikTok Studio post safely: publish first, delete second

When replacing scheduled TikTok Studio posts (to post them now, or with a fixed cut), upload and publish the new copy first, then delete the old scheduled row matched by caption prefix AND its old slot time. The new post shows a different time, so the match stays unique, and a failed upload never leaves a gap. Studio has no 'replace video' action on scheduled posts. Delete is the row's last button, which opens Dropdown__content, then a confirm dialog. Re-read the list afterwards and check that each caption appears exactly once.