Defines from build.config are not passed to code model used in refactoring

AFAIK It's only related to external build system projects. Let's say I have something like :

#ifdef FOO
int bar = 2;
#endif

And in build.config I have :

#define FOO

What's happening - code highlighting works as indented (you can see code highlighter reads build.config and understand that block is defined), but I cannot use refactoring tools between #ifdef - #endif. If I remove #ifdef / #endif refactoring tools are working again.