Sequences rendered, but not rendered in different sequence

I've been working on multiple sequences that have a lot done to them. Most of the sequences are 100 percent ready for rendering.

I've rendered them in their sequences, and when added to a main sequence they aren't rendered. When copied and pasted into the main sequence they're rendered. It doesn't make much sense to me and creates hours of more of rendered to preview the project. 

As an example, I've shown an example with only 2 sequences.

I've completely the first two sequences completely...

This is the main sequence where half of the sequences are in, but sequences are not rendered (all sequences are the same preset) but rendered in their own sequences respectively. I've even copied on of the sequences to the main, and its rendered in there.

I've experienced this issue for multiple videos now. the top clip is from after effects and takes hours to render, and in order to preview I need to render again then exporting. I am not sure if there's a correct way to do this, possibly work all out of the main sequence and sub sequence them? Only thing I've noticed is my sequence settings gray out Video Previews, so I cannot smart render.