Level translation when streaming not working

Development World Creation
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9

After a morning of struggling with this, I think I have a solution.

I make the solution in C++, this is the code:

void ACorridorActor::LoadLevel(const FName LevelName, const FTransform& LevelTransform)
{
	auto CurrentLevel = UGameplayStatics::GetStreamingLevel(GetWorld(), LevelName);

	if (CurrentLevel && !CurrentLevel->IsLevelLoaded())
	{
		LoadedLevelTransform = LevelTransform;
		LoadedLevelName = LevelName;
		
		FLatentActionInfo LatentInfo;
		LatentInfo.Linkage = 0;
		LatentInfo.UUID = 1;
		LatentInfo.CallbackTarget = this;
		LatentInfo.ExecutionFunction = "CallbackOnLevelLoaded";
		UGameplayStatics::LoadStreamLevel(this, LevelName, false, false, LatentInfo);
	}
	else if (CurrentLevel == nullptr)
	{
		UE_LOG(LogTemp, Error, TEXT("ERROR: Could not load level %s, level not found!"), *LevelName.ToString());
	}
}

void ACorridorActor::CallbackOnLevelLoaded()
{
	auto CurrentLevel = UGameplayStatics::GetStreamingLevel(GetWorld(), LoadedLevelName);

	if (CurrentLevel)
	{
#if WITH_EDITOR
		FLevelUtils::SetEditorTransform(CurrentLevel, LoadedLevelTransform);
#endif
		CurrentLevel->LevelTransform = LoadedLevelTransform;
		CurrentLevel->SetShouldBeVisible(true);

		OnLevelLoaded.Broadcast();
	}
}

void ACorridorActor::UnloadLevel(FName LevelName)
{
	const auto CurrentLevel = UGameplayStatics::GetStreamingLevel(GetWorld(), LevelName);

	if (CurrentLevel && CurrentLevel->IsLevelLoaded())
	{
		FLatentActionInfo LatentInfo;
		LatentInfo.Linkage = 0;
		LatentInfo.UUID = 0;
		LatentInfo.CallbackTarget = this;
		LatentInfo.ExecutionFunction = "CallbackOnLevelUnloaded";
		UGameplayStatics::UnloadStreamLevel(this, LevelName, LatentInfo, false);
	}
}

void ACorridorActor::CallbackOnLevelUnloaded()
{
#if WITH_EDITOR
	auto CurrentLevel = UGameplayStatics::GetStreamingLevel(GetWorld(), LoadedLevelName);

	if (CurrentLevel && !CurrentLevel->IsLevelLoaded())
	{
		// To avoid warnings in the editor, should be moved to Identity at this point. 
		FLevelUtils::SetEditorTransform(CurrentLevel, FTransform());
	}
#endif
	
	OnLevelUnloaded.Broadcast();
}

Tested inside and outside the editor.

Hope this helps someone.