Overriding blueprint function first in grandchild class then in child class renames grandchild function

bool FBlueprintEditorUtils::ValidateAllFunctionGraphs(UBlueprint* InBlueprint, UBlueprint* InParentBlueprint, const FName& InVariableName)
{
	for (int32 FunctionIndex=0; FunctionIndex < InBlueprint->FunctionGraphs.Num(); ++FunctionIndex)
	{
		UEdGraph* FunctionGraph = InBlueprint->FunctionGraphs[FunctionIndex];

		TSharedPtr<FKismetNameValidator> ParentBPNameValidator = MakeShareable(new FKismetNameValidator(InParentBlueprint));

		if( FunctionGraph->GetFName() == InVariableName )
		{
			bool bRename = true;

			TArray<const UK2Node_FunctionEntry*> ChildFunctionEntryPoints;
			FunctionGraph->GetNodesOfClass(ChildFunctionEntryPoints);

			for (int32 EntryPointsIdx = 0; EntryPointsIdx < ChildFunctionEntryPoints.Num(); EntryPointsIdx++)
			{
				const UK2Node_FunctionEntry* EventNode = ChildFunctionEntryPoints[EntryPointsIdx];
				check(NULL != EventNode);

				const UClass* FuncClass = *EventNode->SignatureClass;
				for (UEdGraph* ParentFunctionGraph : InParentBlueprint->FunctionGraphs)
				{
					if (ParentFunctionGraph->GetName().Equals(FunctionGraph->GetName()))
					{
						TArray<const UK2Node_FunctionEntry*> ParentFunctionEntryPoints;
						ParentFunctionGraph->GetNodesOfClass(ParentFunctionEntryPoints);
						for (const UK2Node_FunctionEntry* ParentEventNode : ParentFunctionEntryPoints)
						{
							const UClass* ParentFuncClass = *ParentEventNode->SignatureClass;
							if (ParentFuncClass == FuncClass)
							{
								//Signatures based on same class
								bRename = false;
							}
						}
					}
				}

				if (bRename)
				{

					FName NewName = FBlueprintEditorUtils::FindUniqueKismetName(InBlueprint, FunctionGraph->GetName());
					FBlueprintEditorUtils::RenameGraph(FunctionGraph, NewName.ToString());

					UE_LOG(LogBlueprint, Warning, TEXT("Blueprint %s (child of/implements %s) has a function graph with a conflicting name (%s). Changing to %s."), *InBlueprint->GetName(), *InParentBlueprint->GetName(), *InVariableName.ToString(), *NewName.ToString());
					return true;
				}
			}
		}
	}
	return false;
}