Disable the new FBX importer in UE 5.5

gamedev unreal scoops
1

In UE5.5 Epic has changed the default importer to the Interchange FBX importer and it's been causing a lot of issues for folks, with things not working as they should, or blendshape animations getting imported as a completely separate anims. It's bad! Fortunately you can disable it with Interchange.FeatureFlags.Import.FBX 0.

You can also chuck it into the ConsoleVariables.ini in the Engine/Config folder of your engine install
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2

Interchange was causing me some really annoying problems, and disabling it solved it, so this is super handy, thankies!