Rauf:
I do not know the answer to your question, as I an not familiar with the meta free assembler, but I suspect that it cannot be cascaded.

Why don't you just try it out. Should be simple to make a test case to check to see if it works.

One reason why an assembler programmer may make the decision to make macros not cascadable is to avoid the problem of endless loop.....IE macroA -> macroB -> macroA -> macroB forever.

But none the less....try it and you can soon have your answer.
Mike Karas