Downgrading and Skipping Versions
Lighthouse does not allow downgrading of nodes, nor does it allow upgrading to an identical version. The node upgrade will skip nodes that are at the upgrade version or later, for example, if upgrading from version 21.Q3 to 21.Q4, it will ignore any nodes that are already at 21.Q4 or 22.Q1.
Skipping versions
If a node is scheduled to be upgraded from 21.Q3 directly to 22.Q1 (skipping 21.Q4), it will upgrade the node even if it has been manually upgraded to 21.Q4 before the scheduled upgrade starts.
Note: Lighthouse does not check or validate the version jumps for nodes, so there is a risk that the upgrade could fail if major versions are being skipped. Skipping versions is not recommended or supported, however, it is not disallowed.