Probably specific bits have been altered or dropped to go with changes in the world and her life, but the basics of her act have been more or less the same since the 50s, except for adding stuff about her plastic surgeries since that whole thing started, her daughter as soon as there were funny things to say about her, and so on... And, of course, moderating the level of vulgarity for the audience - even if Melissa had been old enough for it to not be creepy, I doubt she'd have done the bit about teaching her how to give head in order to bag a husband on TV in the 80s, for instance.