Foliage Instances aren't showing inside foliage tab?

I’m having trouble with UE4 these last few days. Don’t know what exactly is happening. I’ve painted all the foliages on the landscape and suddenly the foliage tab doesn’t show a thing, but the foliages are still in the world. Why is this happening. This is really frustrating. I’ve attached a screenshot of my editor.

Please help me solve this issue. I think it is happening since 4.7

Hi,

Do you have any sub-levels in your map? Open Levels tool, and switch between sub-levels there by double clicking on their names. Foliage tool shows foliage meshes that are inside “current” sub-level, so probably in your case current sub-level does not have any associated foliage.

@ddvlost Yes, I’ve around 5 right now and each one is just an upgraded version of the same map.
You’re saying that the most basic version of the map where I painted the foliage, has the foliage attached to it.
How can I fix it?