Hi Heiko,
I assume with your experience you have not done the training but only studied the R81.20 study book? Or what have you used to study?
I have done the same exam (CCTA and CCTE). The only legacy issue I recall is fw monitor changes.
But in a way it is not a bad idea to learn both. In general I liked to exam and is improved a lot from the past. In a way legacy questions will be always an issue in the IT world. It changes so often that it is not really possible to keep the exam inline with the current situation. Also it is a good way to 'test' the real world experience with the product. Not everything you learn from the book.
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