Flex: Importing projects from Eclipse/FlexBuilder

What is the equivalent of eclipse's "linked resource" in IDEA?

For example in FlexBulder I have linked resources "DOCUMENTS" that is used in source/lib path and in "additional compiler argument" string (for ex. -load-config+=${DOCUMENTS}/flex-config-debug.xml).

After migrating the project into IDEA, I still see ${DOCUMENTS} in compiler options, but trying to build the project I get:

>configuration variable 'load-config' value contains unknown token 'DOCUMENTS'

Any idea how I can fix it? (without manually replacing DOCUMENTS with real path)