Yes its just a like a direct method invocation. Or as if you concat the routes together.
And what do you mean by not working?
Okay so its supposed to work. In my tests it didn't seem to work as it didn't write neither on the JMS output destination nore in the output file. But I'm deplying on Karaf and, working with files with absolute path seems to be tricky, especially on Windows. For example, file://D: is sometimes relative to the Karaf root directory despite the "D:". Otherwise it correctly refers the right location depending on conditions that I didn't yet clarify. So it might be that it worked but I didn't notice it. Many thanks for the answer.