Hi Adrian, Thanks for your reply. This works partially. It ignores now the additional toplevel namespace declarations. But sadly the namespaces inside the document are still marked as 'different'. For some reason it does work if I also select the 'ignore text' button. Which was enough for my purpose...

There's some discussion going on and I am tasked to prove beyond doubt that two files are 'XML equivalent'. One of them has all namespace declarations on the root element and a global namespace. The other has the namespaces distributed and all elements are prefixed with a namespace (the global names...