contains MRs:

https://gitlab.cern.ch/atlas/athena/-/merge_requests/49484 PowhegControl: add 21.6 MRs which failed the sweep 

https://gitlab.cern.ch/atlas/athena/-/merge_requests/49502 GeneratorFilters: Fix duplicate Gaudi property names. 

https://gitlab.cern.ch/atlas/athena/-/merge_requests/49527 Update ISF_Validation tests (part 3: cosmics simulation) 

https://gitlab.cern.ch/atlas/athena/-/merge_requests/49588 TTbarWithJpsimumuFilter: bug fix, PowhegControl: add mu2tau postprocessor alg. 

https://gitlab.cern.ch/atlas/athena/-/merge_requests/49625 Update MCTester cmake config. 

https://gitlab.cern.ch/atlas/athena/-/merge_requests/49060 Update TTbarWithJpsimumuFilter.cxx 

https://gitlab.cern.ch/atlas/athena/-/merge_requests/49069 Add proper treatment of units and masses to Photos interface. (AGENE-2125) 

https://gitlab.cern.ch/atlas/athena/-/merge_requests/49072 Fixed Photos interface formatting 

https://gitlab.cern.ch/atlas/athena/-/merge_requests/49082 PowhegControl correct version and path setup, ParticleGun withdraw previous changes 

https://gitlab.cern.ch/atlas/athena/-/merge_requests/49114 Fix units in photos 

https://gitlab.cern.ch/atlas/athena/-/merge_requests/49116 TrackCaloClusterRecTools+PanTauAlgs+OjfJet+GeneratorFilters: Fix clang13 warnings. 

https://gitlab.cern.ch/atlas/athena/-/merge_requests/49129 SuperChic fix python problem 

https://gitlab.cern.ch/atlas/athena/-/merge_requests/49189 Epos_i fix interface to work with the new version, SuperChic_i a fix to make... 

https://gitlab.cern.ch/atlas/athena/-/merge_requests/49224 Use stock interfaces to external generators in the EvtGen interface 

https://gitlab.cern.ch/atlas/athena/-/merge_requests/49234 add xAODM4MuIntervalFilter 

https://gitlab.cern.ch/atlas/athena/-/merge_requests/49237 Remove ActiveStoreSvc 

https://gitlab.cern.ch/atlas/athena/-/merge_requests/49304 Add a set of harmonised MC filters 

https://gitlab.cern.ch/atlas/athena/-/merge_requests/49325 New Epos_i interface with CRMC 2.0.1 

https://gitlab.cern.ch/atlas/athena/-/merge_requests/49360 add 3 xaodtruth filters, add existing filters in components 

https://gitlab.cern.ch/atlas/athena/-/merge_requests/49441 GeneratorFilters: Fix clang warnings. 

https://gitlab.cern.ch/atlas/athena/-/merge_requests/49484 PowhegControl: add 21.6 MRs which failed the sweep 

https://gitlab.cern.ch/atlas/athena/-/merge_requests/49502 GeneratorFilters: Fix duplicate Gaudi property names. 

https://gitlab.cern.ch/atlas/athena/-/merge_requests/49527 Update ISF_Validation tests (part 3: cosmics simulation) 

https://gitlab.cern.ch/atlas/athena/-/merge_requests/49588 TTbarWithJpsimumuFilter: bug fix, PowhegControl: add mu2tau postprocessor alg. 

https://gitlab.cern.ch/atlas/athena/-/merge_requests/49625 Update MCTester cmake config. 

https://gitlab.cern.ch/atlas/athena/-/merge_requests/49628 adding 7 more truth xaod generator filters 

https://gitlab.cern.ch/atlas/athena/-/merge_requests/49770 ParticleGun: add correct units setup 

https://gitlab.cern.ch/atlas/athena/-/merge_requests/49775 Added an implementation of attributes to GenEvent 

https://gitlab.cern.ch/atlas/athena/-/merge_requests/49823 ParticleGun: Fix for HepMC2 compatibility. 

https://gitlab.cern.ch/atlas/athena/-/merge_requests/49836 Powheg, Rivet, H7 : add MR submitted to 21.6 that did not reach master

https://gitlab.cern.ch/atlas/athena/-/merge_requests/49882    update Starlight to be up to date with changes introduced in 21.6 

https://gitlab.cern.ch/atlas/athena/-/merge_requests/49894 Add README for GeneratorFilters

https://gitlab.cern.ch/atlas/athena/-/merge_requests/49895 Update histsampling.py to be compatible with the changes in 21.6 

https://gitlab.cern.ch/atlas/athena/-/merge_requests/49933 PowhegControl: add by hand the changes from !49858

https://gitlab.cern.ch/atlas/athena/-/merge_requests/49935 Generators: use GenEvent cross-section if none supplied by user 

https://gitlab.cern.ch/atlas/athena/-/merge_requests/49942 Generators: support both Sherpa 2.x and 3.x syntax 

https://gitlab.cern.ch/atlas/athena/-/merge_requests/49944 Starlight: add ART test producing LHE file 

https://gitlab.cern.ch/atlas/athena/-/merge_requests/49983 Update McEventCollectionCnv_p5 so that the input matches the output after a single round of T->P->T conversion 

https://gitlab.cern.ch/atlas/athena/-/merge_requests/49985 TruthIO, MG common update to 21.6 

https://gitlab.cern.ch/atlas/athena/-/merge_requests/50043 Hto4lControl add to master 

https://gitlab.cern.ch/atlas/athena/-/merge_requests/50086 Hijing: add common fragments and ART test 

https://gitlab.cern.ch/atlas/athena/-/merge_requests/50090 MCJobOptionUtils add package from 21.6 

https://gitlab.cern.ch/atlas/athena/-/merge_requests/50095 Pythia8_A3_NNPDF23LO_Common modify as in rel. 21.6 

https://gitlab.cern.ch/atlas/athena/-/merge_requests/50103 Update Photospp_i.cxx to avoid duplicated "history" particles in the event 

https://gitlab.cern.ch/atlas/athena/-/merge_requests/50107 Update McEventCollectionCnv_p6.cxx to fix ATLASSIM-5621

https://gitlab.cern.ch/atlas/athena/-/merge_requests/50108 Update Epos HepMC interface 

https://gitlab.cern.ch/atlas/athena/-/merge_requests/50116 GeneratorFilters: dropped dependency on EventInfo 

https://gitlab.cern.ch/atlas/athena/-/merge_requests/50123 Pythia8B update to version used in 21.6 (porting MRs, which were not swept) 

https://gitlab.cern.ch/atlas/athena/-/merge_requests/50141 MuonPRDTest+MuonRPC_CnvTools+PixelGeoModelXml+PLRGeoModelXml+ReweightTools: Fix warnings seen when LTO is enabled. 

https://gitlab.cern.ch/atlas/athena/-/merge_requests/50143 GeneratorFilters: Fix cppcheck warnings. 

https://gitlab.cern.ch/atlas/athena/-/merge_requests/50165 Pythia8_i update to version in 21.6 (add the MRs that did not reach master)

https://gitlab.cern.ch/atlas/athena/-/merge_requests/50179 Sweeping !50124 from 21.6 to master. Added fragment and README section for Pythia8 hadronization interface 

https://gitlab.cern.ch/atlas/athena/-/merge_requests/50218 Sweeping !45369 from 21.6 to master. 21.6: support for 7-digit DSIDs 

https://gitlab.cern.ch/atlas/athena/-/merge_requests/50248 Dropped McAsciiEventSelector 

https://gitlab.cern.ch/atlas/athena/-/merge_requests/50281 Update test_gen_herwig7_minbias.sh to use new DSID

https://gitlab.cern.ch/atlas/athena/-/merge_requests/50312 Cleanup SimConfigFlags + add enums 

https://gitlab.cern.ch/atlas/athena/-/merge_requests/50318 TruthConverters: cmake fix 

https://gitlab.cern.ch/atlas/athena/-/merge_requests/50360 Pythia8_i: Fix clang warnings. 

https://gitlab.cern.ch/atlas/athena/-/merge_requests/50375 Sweeping !50367 from 21.6 to master. allow Sherpa to save and restore RNG status

https://gitlab.cern.ch/atlas/athena/-/merge_requests/50456 Initialise the read handle in GenBase (ATEAM-813) 

https://gitlab.cern.ch/atlas/athena/-/merge_requests/50576 Fixed derived classes overriding handle init in base class (ATEAM-813)

https://gitlab.cern.ch/atlas/athena/-/merge_requests/50663 GeneratorFilters: add reweighting for multiweights, fix x-section calculation... 

https://gitlab.cern.ch/atlas/athena/-/merge_requests/50669 Truth x aod gen filter forward proton filter 

https://gitlab.cern.ch/atlas/athena/-/merge_requests/50679 PowhegControl: fixing error messages from MadSpin, adding Wt_DR_Modified MR50660