notes/pl/java/tools/quality/monitoring/micrometer/integration/spring-integration.txt

https://docs.spring.io/spring-boot/docs/current/reference/htmlsingle/#boot-features-integration

By default, if a Micrometer meterRegistry bean is present, Spring Integration metrics will be managed by Micrometer.
If you wish to use legacy Spring Integration metrics, add a DefaultMetricsFactory bean to the application context.