We have an exception that if we promote again within 12 months into a rank someone (or multiple) were unsuccessful for, we don’t repeat the process and promote on merit based against progress since being rejected.
This tends to be a case of either “we could have promoted more, but not all were ready” or “we didn’t have enough slots, but one opened up”.
It doesn’t really affect the next batch of candidates too much (for anyone wondering if it means some that didn’t apply miss out), because of timing with intake schedule and leavers at the top.