It's common for one or more maven-built, Flex client applications to be maintained as separate projects (swf type). Each client is its own project, after compilation the target artefact (.swf) is copied to the web projects where the flex client will be deployed.
Inside STS I have a Flex client project and a dynamic web project. I invoke maven on the Flex client, which creates the .swf file and copies it to the dynamic web project. I then refresh the web project. The refresh should only cause the .swf file to be copied to the dm Server. Instead it triggers a bundle refresh.
My workaround is the Redeploy Behavior list of patterns on the dm Server configuration editor but I'm entering this as it should be there out of the box.