How to create a JQL to query the tickets which has link to another project at all hierarchy?

[Alfred Tan]

Hi Peers, 

I and using Jira Structure and I would like to find tickets in project IIP (level 1 and level2) which have link to another project (Level 3, DGAW). 

Refer to attached picture for more understanding. 

I had tried " issue in links ", "IssueFunction in linkedIssueof" but none of them is working. 

It only show the tickets that has link to level 1 (C) but not both levels (level 1 and 2). 

Please help.

issueFunction in linkedIssuesOf('

issueFunction in linkedIssuesOf('

issueFunction in linkedIssuesOf('