/* Ignore prepared updates if it is checkpoint. */
        if (upd->prepare_state == WT_PREPARE_LOCKED ||
          upd->prepare_state == WT_PREPARE_INPROGRESS) {
            WT_ASSERT(session, upd_select->upd == NULL || upd_select->upd->txnid == upd->txnid);
            if (F_ISSET(r, WT_REC_CHECKPOINT)) {
                has_newer_updates = true;
                if (upd->start_ts > max_ts)
                    max_ts = upd->start_ts;

                /*
                 * Track the oldest update not on the page, used to decide whether reads can use the
                 * page image, hence using the start rather than the durable timestamp.
                 */
                if (upd->start_ts < r->min_skipped_ts)
                    r->min_skipped_ts = upd->start_ts;
                continue;
            } else {
                /*
                 * For prepared updates written to the date store in salvage, we write the same
                 * prepared value to the date store. If there is still content for that key left in
                 * the history store, rollback to stable will bring it back to the data store.
                 * Otherwise, it removes the key.
                 */
                WT_ASSERT(session,
                  F_ISSET(r, WT_REC_EVICT) ||
                    (F_ISSET(r, WT_REC_VISIBILITY_ERR) &&
                      F_ISSET(upd, WT_UPDATE_PREPARE_RESTORED_FROM_DS)));
                WT_ASSERT(session, upd->prepare_state == WT_PREPARE_INPROGRESS);
            }