How do I remember Layout Size after changing it and swap Layouts?

I have "layout base" with size 100*100

When I go to layout first time I fill it with content and change layout size to appropriate.

When I change layouts and came back - my layout returns to its base size 100*100.

I developed a solution - when I came back to filled with content layout, Im recalculate and restore its size.

But i feel thats wrong.

So, can I and how I can change layout "base size" to new?