I believe that the general behavior of copy-and-paste between wireframes is to use the same X/Y coordinates as the source (or it should be, so as to keep wireframe elements consistent between states).
I noted a bug here.
Steps to Reproduce:
Create a wireframe (I’ll refer to as A). Place a Window anywhere. To the left of it, place a Rectangle container
Now, create a new wireframe (B).
From A, copy the Window. Note the X/Y coordinates. Paste this into B, which pastes to the same X/Y position.
Now copy the Rectangle. This time, when pasting into B, it is being pasted inside the Window, instead of its original X/Y.
Expected behavior: ALL elements that are copied and pasted should paste to their original coordinates.
This is with 4.0.25.