My start menu launches an older level version

I followed these steps to create a start menu https://docs.unrealengine.com/latest/INT/Engine/UMG/QuickStart/3/

It worked great when I first created it but it doesn’t seem to update when I change anything in the level that it’s supposed to load. It loads an older version of the level though one more recent than the version when I first created the start menu so it seems like its occasionally updating. Is there any way to force it to the newest version of the level?