Hi Aviar,
Unfortunately there isn't a way to copy multiple layers with Gimp.
You can open both images and just click and drag the layers from the Layer window of the "copy" image right onto the image window of your "pasting" image.
Gimp will leave the Layer on your original image, and put the word "copy" next to your name for the layer on the pasted image.
If the images are the same size, the layer will be placed exactly where it was on the first image. You may have to move it around a bit if the images are different sizes.
Also of note, Gimp will place the pasted layer on top of the last active layer on the pasting image. So to get them placed right the first time, just activate the layer below where you want it pasted. This saves you the bother of pasting, and then having to raise or lower the layer afterward.
Hope this helps you out.
Linear Mode
