HI, i attach references to main drawing. At that time, Level display manager is active. And I attach main drawing to sheet view of main drawing. When I attach, only the level in the main references is active and those references is not active show in grey

HI, i attach references to main drawing. At that time, Level display manager is active.


And I attach main drawing to sheet view of main drawing. When I attach, only the level in the main references is active and those references is not active show in grey color.


Is anyone face the problem before?
Please share some information with me.
Thanks You