Hello @loretij
Documentation here will guide you through importing issue links - Import issue links
I also highly recommend reading this community post written by my colleague Gerda about Issue Links. Import issue links as dimension You will see step by step how to import links and how they are then displayed in the report. At the end of the post, there is also a link to our demo account report that you might also find useful.
Best wishes,
Elita from support@eazybi.com