From my personal experience with FlexLM, floating licenses can generally be rehosted on your own when needed.
Node locked licenses however cannot be rehosted because allowing that would basically allow you to create licenses for multiple computers.
If you cannot just install the compiler on another computer and provide the license file during setup, then your only option is to contact technical support (premier.intel.com, or maybe even phone), and ask for your existing node-locked license to be revoked and reissued. Hopefully Intel will trust you to stop using the old one. I also suggest you to get a floating license instead if possible because it is more flexible.