Board1: Level1_Query: Display specific set of initiatives (not all)
Project = "xyz" AND Type = "Initiative" AND Labels in (A01, B01,C01,D01)
Board 2: Level2_Query: Display Epics for above set of initiatives linked by "Parent Link"
Project = "xyz" AND Type = "Epic" AND IssueKey In (Level1_Query)
Complete Query: Project = "xyz" AND Type = "Epic" AND IssueKey In ('Project = "xyz" AND Type = "Initiative" AND Labels in (A01, B01,C01,D01)')
Board 3: Level3_Query: Display Epic and their next level children;stories/tasks (Not the Sub-Tasks)
Project = "xyz" AND Type NOT IN ("Initiative") AND IssueOfEpics (Level2_Query)
Board 4: Level4_Query: Display Stories/Tasks from level 3 with their sub tasks
Project = "xyz" AND Type NOT IN ("Initiative","Epic") AND IssueOfEpics (Level3_Query)
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Basically I want to implement nested queries in filter criteria. Any help would be appreciated.