RedHellion

Nope, as you can see nobody ever replied. Just means that I can't actually edit the logic of anything in that blueprint, although I have been able to at least still "Save to Mod" other blueprints and data tables which it references.

Check out this mod, file 4 (Loadouts Gamma): https://www.nexusmods.com/mechwarrior5mercenaries/mods/42?tab=files Also note that you don't actually need to own the EGS version of the actual game to use the editor. I own the Steam version, and I was still able to download the MechWarrior 5 Editor from the EGS for free.

Basically every mod got broken with the update. As a general rule, look at the "Last Updated" date on the mod's page. If it's before May 28th 2021, it probably doesn't work any more and won't until the mod author fixes it. For instance, Reloaded literally says on its Description page Note: This mod is not compatible with the new version of MW5 that is released on Steam or any other platform, and there is no immediate plan for an update. Nothing PGI is going to update themselves will suddenly make those mods works again unless they roll back all the changes they made (highly unlikely). You'll have to either find new mods that do those things and are actually still being updated by their authors, or live without.

If I try to "Save to Mod" Content/LevelGenerators/ScenarioGeneratorClass (without making any changes to anything), I get a popup asking me to check for references to some InstantActionCheck graph: https://imgur.com/a/dIgLgFx which then fails if I click "yes" and gives me this error: Can't save ../../../MW5Mercs/Plugins/TEST_MOD/ModOverride/LevelGenerators/ScenarioGeneratorClass.uasset: Graph is linked to external private object EdGraph /Game/LevelGenerators/ScenarioGeneratorClass.InstantActionCheck (MacroGraph) Is this class just broken in the editor for some reason and we can't mod it? I've tried validating my install of MechWarrior5Editor, and even a full uninstall/reinstall. I saw a few help articles on this https://answers.unrealengine.com/questions/219204/cant-save-due-to-graph-is-linked-to-external-priva.html , but I'm unsure how PGI was able to ship a broken blueprint or how any fellow modders edit these files without running into problems.