HepMC3, centos7, validation release for Pythia8.311 contains MRs: https://gitlab.cern.ch/atlas/athena/-/merge_requests/70152 barcode -> ID migration for HGTD/InDet/MuonDigitization (2nd attempt) https://gitlab.cern.ch/atlas/athena/-/merge_requests/70268 Projects: Update to LCG_104d_ATLAS_11