unfortunately bozja story was "resolved" for now in the Field Notes
and expansion to expansion Relics Storylines get slotted in all over the place
there was never any indication that the EW Relic Story would be a direct continuation out of the Bozja storyline

new Alliance raids for each expansion debut on odd number patches
part 2 will come out with patch 6.3
and since patch 6.2 is slated to release late august...
6.3 probably won't release til somewhere between late december to mid/late january