When the value of the TMap variable of the child blueprint is changed and compiled, it will restore to the default value of the parent blueprint.

For TMap variables of type struct created in blueprint, if change the default value in child blueprint and compile, it will restore to the default value of the parent actor.

This problem does not occur when a C++ struct is used for the TMap variable.

1. Open the attached sample project in editor.
2. Open "BP_Child" blueprint.
3. Set "false" in bool property. [Struct->Key(S_Struct)->MemberVar_0]
4. Compile blueprint.
   Then, the bool value will restore to the default value (true).

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