How to synchronize module configuration files

In our project, we check in the *.iml files mainly to share configuration for factes and jdk etc.

We often face the problem, that we have source code differences in these files regarding to the managed libraries:

<orderEntry type="library" name="Maven: org.springframework.boot:spring-boot-actuator:1.5.1.RELEASE" level="project" />

For me, it's magic how IntelliJ synchronizes the configuration with maven. How does this work? Is there a way to manually trigger the synchronization process?

Thanks for any help.