Sketch the entire header and footer are made in one layer, is it possible to somehow break them into layers?

Question

Sketch

There is a layout in sketch format, its header and footer are made in one layer, you can’t select anything, neither the logo nor the text, nothing. The layer is called "screenshot". Is there any way to break it down into layers? I have an Avocode program, it seems impossible to add it to Zepplin.

Answer 1

If there are already bitmap images in the raster in the source code, then splitting will not work automatically. If only to redraw everything anew on separate layers.