contins MRs:

https://gitlab.cern.ch/atlas/athena/-/merge_requests/45598 Fix SuppressSmallPT usage in Pythia8B 
https://gitlab.cern.ch/atlas/athena/-/merge_requests/45606 M4MuIntervalFilter guard typo 
https://gitlab.cern.ch/atlas/athena/-/merge_requests/45619 Add MainEvgenServicesCfg method 
https://gitlab.cern.ch/atlas/athena/-/merge_requests/45629 Truth xAOD generator filters 
https://gitlab.cern.ch/atlas/athena/-/merge_requests/45637 Updates for Cosmic Sim TR in newstyle CA 
https://gitlab.cern.ch/atlas/athena/-/merge_requests/45649 PowhegControl: fixing reweighting issues (master) 
https://gitlab.cern.ch/atlas/athena/-/merge_requests/45658 Replace usage of ConfigFlags.Input.InitialTimeStamp with ConfigFlags.Input.TimeStamp 
https://gitlab.cern.ch/atlas/athena/-/merge_requests/45666 Fixes for the nightlies 06.08.2021 
https://gitlab.cern.ch/atlas/athena/-/merge_requests/45726 Tweaks to CA-based Simulation Configuration 
https://gitlab.cern.ch/atlas/athena/-/merge_requests/45732 ProtosLHEF_i: Fix gcc11 warnings. 
https://gitlab.cern.ch/atlas/athena/-/merge_requests/45782 Saving xsec info in hepmc event by passing pythia.info pointer 
https://gitlab.cern.ch/atlas/athena/-/merge_requests/45786 ComponentAccumulator-based configuration for Cavern Background and Cosmics Simulation 
https://gitlab.cern.ch/atlas/athena/-/merge_requests/45830 Master: powheg log issues and ttj mi nnlops first implementation
https://gitlab.cern.ch/atlas/athena/-/merge_requests/45925 GeneratorFilters: add corrections for ParentChild and ParentTwoChildren... 
https://gitlab.cern.ch/atlas/athena/-/merge_requests/45973 SameParticleHardScatteringFilter 
https://gitlab.cern.ch/atlas/athena/-/merge_requests/45975 Syncronize the v HepMC3 and HepMC2 version of TTbarWToLeptonFilter filters in master 
https://gitlab.cern.ch/atlas/athena/-/merge_requests/46019 GeneratorFilters : update XtoVVDecayFilterExtended.cxx to 21.6 version 
https://gitlab.cern.ch/atlas/athena/-/merge_requests/46120 GeneratorFilters: update ChargedTracksFilter to version from 21.6 
https://gitlab.cern.ch/atlas/athena/-/merge_requests/46159 CountHepMC: use long long int for event number 
https://gitlab.cern.ch/atlas/athena/-/merge_requests/46198 modify ART tests so that they could run also on master--HepMC3/Athena 
https://gitlab.cern.ch/atlas/athena/-/merge_requests/46201 Fix compilation for HepMC3 and crashes for pythia8 
https://gitlab.cern.ch/atlas/athena/-/merge_requests/46217 Add run info to Sherpa and Herwig generators 
https://gitlab.cern.ch/atlas/athena/-/merge_requests/46251 GeneratorFilters: add SameParticleHardScatterFilter to the components and put... 
https://gitlab.cern.ch/atlas/athena/-/merge_requests/46285 updated master ART tests
https://gitlab.cern.ch/atlas/athena/-/merge_requests/46317 Fix logic of MC interfaces for HepMC3 branch 
https://gitlab.cern.ch/atlas/athena/-/merge_requests/46344 GeneratorFilters: fix DirectPhotonFilter 
https://gitlab.cern.ch/atlas/athena/-/merge_requests/46394 Sweeping !46372 from 21.6 to master. add hdamp steering params for Powheg ttbb module 
https://gitlab.cern.ch/atlas/athena/-/merge_requests/46409 Sweeping !46391 from 21.6 to master. Patching MadGraphControl use of sde_strategy 
https://gitlab.cern.ch/atlas/athena/-/merge_requests/46415 GeneratorFilters : correct the units 
https://gitlab.cern.ch/atlas/athena/-/merge_requests/46425 correct a typo
https://gitlab.cern.ch/atlas/athena/-/merge_requests/46508 Pythia8_i: correct the units to avoid crashes in TestHepMC 
https://gitlab.cern.ch/atlas/athena/-/merge_requests/46528 GeneratorObjects: Fix potential race
https://gitlab.cern.ch/atlas/athena/-/merge_requests/46581 GeneratorObjectsTPCnv: Clear flow information when reading. 
https://gitlab.cern.ch/atlas/athena/-/merge_requests/46587 Sweeping !46574 from 21.6 to master. Superchic example job option fix 
https://gitlab.cern.ch/atlas/athena/-/merge_requests/46718 EvgenJobTransforms: fix the counting of LHE events - as already done in 21.6 
https://gitlab.cern.ch/atlas/athena/-/merge_requests/46731 GeneratorFilters: Suppress cppcheck warning. 
https://gitlab.cern.ch/atlas/athena/-/merge_requests/46735 Truth xaod gen filter2 
https://gitlab.cern.ch/atlas/athena/-/merge_requests/46778 EvgenJobTransforms: add runArgument allowing to go to DEBUG mode for generators 
https://gitlab.cern.ch/atlas/athena/-/merge_requests/46815 Sweeping !46796 from 21.6 to master. add bornzerodampcut parameter for Powheg ttbb process 
https://gitlab.cern.ch/atlas/athena/-/merge_requests/46854 EvgenJobTransform : correct bug in setting of debug mode, fixing hepMC3 issue... 
https://gitlab.cern.ch/atlas/athena/-/merge_requests/46871 HepMC3 units: use function provided by HepMC3 to avoid wrong usints on the event display 
https://gitlab.cern.ch/atlas/athena/-/merge_requests/46888 master PowhegControl: adding back the #pdf comment lines
https://gitlab.cern.ch/atlas/athena/-/merge_requests/47224 Gen_tf: support for gridpacks using floating point COM energies 
https://gitlab.cern.ch/atlas/athena/-/merge_requests/47315 Fix Epos crashes 
https://gitlab.cern.ch/atlas/athena/-/merge_requests/47316 Should fix Rivet crashes 
https://gitlab.cern.ch/atlas/athena/-/merge_requests/47322 Added a condition to FixHepMC to allow weak boson decays in the final state 
https://gitlab.cern.ch/atlas/athena/-/merge_requests/47331 Fix the name of the EvtGen decay algorithm 
https://gitlab.cern.ch/atlas/athena/-/merge_requests/47365 add missing generators and tools versions 
https://gitlab.cern.ch/atlas/athena/-/merge_requests/47370 Update EvtInclusiveDecay.cxx to avoid NPD 
https://gitlab.cern.ch/atlas/athena/-/merge_requests/47411 PowhegControl: cherry-pick of "Merge branch '21.6-Powheg_ttMiNNLO_Fixes' into '21.6'" - AGENE-2055
https://gitlab.cern.ch/atlas/athena/-/merge_requests/47418 Update Starlight_i.cxx 
https://gitlab.cern.ch/atlas/athena/-/merge_requests/47420 Fix the crashes in QGSJET 
https://gitlab.cern.ch/atlas/athena/-/merge_requests/47426 cherry-pick of "Merge branch '21.6-Powheg_MadSpin_ErrorLog_Fix' into '21.6'" 
https://gitlab.cern.ch/atlas/athena/-/merge_requests/47436 Try to fix the default values to mimic HepMC2 
https://gitlab.cern.ch/atlas/athena/-/merge_requests/47439 Update test_02_minbias.sh 
https://gitlab.cern.ch/atlas/athena/-/merge_requests/47451 Rivet_i: delete offending curly brace 
https://gitlab.cern.ch/atlas/athena/-/merge_requests/47482 Powheg: update to version Powheg-05-01 
https://gitlab.cern.ch/atlas/athena/-/merge_requests/47515 Update FixHepMC.cxx 
https://gitlab.cern.ch/atlas/athena/-/merge_requests/47522 Fix binary comparison of HepMC3 vs HepMC2 
https://gitlab.cern.ch/atlas/athena/-/merge_requests/47526 local ART tests: add MG+H7 test 
https://gitlab.cern.ch/atlas/athena/-/merge_requests/47537 Fix Rivet errors due to absent GenRunInfo in HepMC3 branch 
https://gitlab.cern.ch/atlas/athena/-/merge_requests/47586 Try to fix AGENE-2090
https://gitlab.cern.ch/atlas/athena/-/merge_requests/47651 Separate logic of fixing the HepMC event from the logic of particle removal 
https://gitlab.cern.ch/atlas/athena/-/merge_requests/47771 Sweeping !47732 from 21.6 to master. patch fake error messaves for Hj_MiNNLO 
https://gitlab.cern.ch/atlas/athena/-/merge_requests/47897 Added a case of merging 2->1 to FixHepMC 
https://gitlab.cern.ch/atlas/athena/-/merge_requests/47908 Update TestHepMC.cxx 
https://gitlab.cern.ch/atlas/athena/-/merge_requests/47934 Fix the way to write beam particles in MCEventCollection for HepMC3 branch 
https://gitlab.cern.ch/atlas/athena/-/merge_requests/47953 Update FixHepMC.cxx to fix https://its.cern.ch/jira/browse/AGENE-2098
https://gitlab.cern.ch/atlas/athena/-/merge_requests/47975 Update test_05_Zmumu_ph.sh to test the showering of Herwig 
https://gitlab.cern.ch/atlas/athena/-/merge_requests/47991 Generators: catch missing cross-sections in HepMC GenEvent