Creating uasset with code creates a duplicate of the uasset

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I have some working code for generating my uassets. The only problem is it always creates a copy at the root of the plugin directory, as well as, in the target subdirectory. Anyone have any idea why SavePackage is doing this?

FString playerController = contentPath + "/PlayerController";
if(platformFile.CreateDirectoryTree(*playerController))
{
     FString mountPoint = TEXT("/Dialogue/PlayerController");
     FPackageName::RegisterMountPoint(
        	*mountPoint,
        	*playerController);
     UPackage *package = CreatePackage(nullptr, 
    `       *(mountPoint + "/ThirdpersonCharacter"));
     ADialoguesCharacter *newAsset = NewObject<ADialoguesCharacter>(
        	package, ADialoguesCharacter::StaticClass(), 
`           TEXT("ThirdpersonCharacter"),
            RF_Public | RF_Standalone
     );
        			
     newAsset->MarkPackageDirty();
     // Here is where the duplicate is
     UPackage::SavePackage(package, newAsset,
        	EObjectFlags::RF_Public | EObjectFlags::RF_Standalone,
        	*((playerController + "/ThirdPersonCharacter") +
        	FPackageName::GetAssetPackageExtension())
     );
     newAsset->Destroy();
}