I have been trying to go through the tutorials located at https://docs.stardog.com/getting-started-series/getting-started-3. Things are going ok and everything looks right until I get to step 4 "Mapping relationships". In that section, it states that I should select the "Purchases - Purchases" mapping in the graphical view and then switch to the "Mapping" tab to set the source and the primary source identifier. I follow the instructions but nothing changes. I noticed that the included gifs in the tutorial include a set of radio buttons on top of the identifier field which asks you if you want to create a new mapping or use the "existing mapping" with the create new mapping selected by default. Those radio buttons do not appear in my space. Is the tutorial out of sync with a version change of the designer? I have gone through things several times now and always run into this issue.
What am I doing wrong here? Thanks for any help.