You can make the graph in the blueprint to be read-only before migration, or unlock the obtained blueprint graph .

Switch the locking state during blueprint programming to avoid misoperations.

`Lock/Unlock blueprint graph , include Actor , UserInterface , EditorUtility , Library class ; etc.

`Event Graph , Function , Macro , Construction Script ; etc.

`UAnimBlueprint is inherit from UBlueprint , but I didn't customize its adaptability .

`MaterialEditor is not inherit from UBlueprint, and Material Graph can not be Lock.