Pool config not removed after configuration update

[dimov-cz]

Recently i removed some pools from configuration (without ensure:absent, just reconfigured) and I didn't noticed that conf files are still there. Later after adding new pool with same listen address/port i got awaitable: unable to set listen address as it's already used in another pool

Is this nonremoving behavior by design? Did i miss some option? I know that I can workaround this with preservation of removed configuration with ensure:absent, but it will complicate things..