Custom File Template for C++

It looks like the file template feature doesn't like c++ preprocessor directives. This is what happens when I add some of them to the template:

#include "something" -> the #include disappears when the file is created from template, so I get a line with just "something"

#define SOMETHING something -> As long as there is #define, when I try to create a file from the template, the generation will fail with the following error message:

Unable to parse template "C++ Test"
Error message: unknown error

For now I work around the issue removing the letter "e" from the directives, Is there a proper way to create a c++ template? The premade header doesn't seem to have issues with #define, so I would assume there is one.

Thanks