Any Jira setup uses issue links for different use cases. While eazyBI supports data analysis on linked issues, you would like to specify what links you would like to import explicitly.
This community topic contains a full walkthrough example on how to import links:
You can use imported links to group or split issues. However, if you would like to access some data from linked issues, for example, count, a logged time, status, etc, you would like to build custom formulas for this. You can see this report example in our training account with several formulas based on linked issues for imported link Bugs. You can replace Bugs with your link field name and reuse any of those formulas.
Daina / support@eazybi.com