Removing hidden content in Affinity Designer

[ElectricGutter]

Hello, Is there a way to eliminate content that is hidden behind another layer?
I have included an attachment which shows my starting point and what I'm looking to get.

I'm starting with a rectangle overlapping an ellipse (fig.1) 

Fig.2 shows the same document after the layers have been divided.

Fig. 3 shows the end results I want to achieve. However, to get this I had to use the add tool and rebuild the rectangle.
I plan on creating documents that will probably have hundreds of layers. Is there a simpler/quicker way to achieve this? 

Thank you

[walt.farrell]

2 minutes ago, ElectricGutter said:

Is there a way to eliminate content that is hidden behind another layer?

Sorry, I don't have an answer for you. But I'm curious why it matters whether the content is merely hidden or actually deleted.

[ElectricGutter]

I plan to Riso print and don't want colors to overlap and blend.

[PixelPest]

Are you in the need of a vector file for Riso Printing? Can´t you just export a raster image as it got scanned anyway for the master?

Cheers

[ElectricGutter]

Thanks PixelPest!! That did exactly what I was going for.

I'm fairly new to vector graphics and I know close to nothing about Riso.

 

Thank you

 

 

[hg808]

I have some artwork that has accumulated many thousands of shapes, most of which are partially or wholly hidden by other shapes in the same layer and other shapes in other layers. I would like to be able to in a single step delete the invisible portions of all shapes simply to reduce file size and rendering time. I have never seen that feature in Designer but maybe I've just not found it yet. Seems like others might find it useful too.