Setting a default imported rotator in the settings .ini file

We want to update the default Import Rotation setting shown when you import an .fbx file into Unreal. Currently the artists are working with Maya and exporting z-forward and when the models are imported, the are rotated -90 on yaw, since Unreal is x-forward.

It looks like we can update DefaultEditorPerProjectUserSettings.ini, but we’re not sure how to properly enter the rotation data.

So, barring a better method, what key/value pair do we enter to set the default Import Rotation setting in this .ini file?