With a lot of to-ing and fro-ing with Magix and screen captures, they finally said that the release notes for WDP18 are incorrect - and download pdf is not available!
This is quite upsetting as I've always paid for the Premium version of WD and would have expected that this function would be supported - the standard version, I understand.

However, the interaction with Support was good and that they always replied within 2-3 days at each stage.