Thanks for trying to keep compatibility with links to the old site. Such links appear in forum – and Duplicati.
As an example I just found that’s a little off, 2.0.8.1 Beta Options screen Remote volume size help links to:
https://www.duplicati.com/articles/Choosing-Sizes/#remote-volume-size but ends up at the top of page at
https://forum.duplicati.com/t/choosing-sizes-in-duplicati/17683
but the interesting thing is that I think I see a URL with the intended fragment identifier flash by during load.
I’d also note that some of the articles are also in the manual, which also underwent some redirection from duplicati.readthedocs.io to docs.duplicati.com. I don’t know which is preferred, or if a similar issue exists…