Okay, this is not about copying a layer within the same drawing...

But rather an inquiry into whether or not there is a way to copy one (or more) layers out of one drawing, INTO another.

For example, I spend some time building like a center piece of my map which I like a lot, but all the other parts around that piece kinda brings it all down. Now I spend more time trying out alternate ways to create the other stuff to my satisfaction, and find that I have to recreate all the layers from the other drawing, or, go back to the original, and with only the layers belonging to the piece I want open, create a png and import THAT as a layer in order to have it in my new drawing. Fine and dandy...

But what if I want to be able to tweak those layers a bit in order to make them fit a bit better in the new background?

Is this possible at all, or am I dreaming in Technicolor?