So the problem is that the code that reads this in the data table class is all in bed with the rest of the editor. You can’t just comment out the Editor Only ifdefs there (I tried it), it calls functions on the asset base classes that are only in the editor, and support functions that are only in editor, etc. It quickly spirals out of control. In order to support this in a standalone game, they’d either have to rewrite a version of the import code that doesn’t use any of the editor support classes or code, or they’d have to move a lot of stuff out of editor into the base engine. Sigh. I hope this is a big boat, because lots of people are in it.