Set filter=false on your resources plugin so they don't get resolved. Unless you need to resolve some properties for other resources this is a fine solution. If you need to filter resources, try avoiding filtering only for that resource, more configuration, but should also work.
The truth is that maven, switchyard, and many other tools, use same ways to define properties, so avoid resolving where shouldn't been resolved, and this time, this is maven.
Thanks for help, Jorge. I disabled filtering and it started working as expected.