Sometimes the model with LOD exported from UE4 (such as FBX2012 format), after importing into 3ds Max, its LOD is not displayed. The reason is that the Visibility property is set and the related track needs to be deleted;
This property needs to be found in the Curve Editor. First, you can open the Curve Editor in the toolbar:
In fact, the key frame timeline under the window bar is part of the Curve Editor:
Each object in the Curve Editor has multiple properties:
These properties can act on specific key frames of the entire timeline, such as the Visibility property of Mesh, which can set the display properties of key frames;
Then delete the relevant track:
