It mat not apply to base, which is very mild anyway; but it does apply to the completed dishes. It is the water that does the damage because it freezes quickly and damages the spices and the consistency. You also tend to get more separation in the sauce. So my advice (and I label all my stuff likewise) for what its worth is to let it defrost naturally in the fridge overnight, and warm it up very slowly on lowest heat, stirring occasionally, until you reach a minimum of 80 degrees C or piping hot as they say.
CP