[Here as an example, we are using : April Global Run (AGR), the GT is GR_E_V37 (usually announced at AlcaDB weekly meeting, Run meeting, PPD meeting and Alca and DB HN fora)].)
The idea is that the one with AlcaRecoHLTPaths or similar is the right one to look into : In this case it is AlCaRecoHLTpaths8e29 _1e31_v7_hlt with last IOV 220850
The Trigger Bit:
Please go to the https://twiki.cern.ch/twiki/bin/view/CMSPublic/SWGuideAlCaRecoTriggerBits twiki and look for the tag in question. [Notice that there is a bug and you need to scroll down and click on the actual tag’s show more in order to access the IOVs, then pick the last (or relevant based on the last since you saw in the GTList tool above) ]