Why can’t I move the image around in the print Layout, after I’ve printed it?

Once a print Layout has been processed and is in the Queue, it cannot be edited.  Right click on the job in the Queue, select Delete and you will again be able to manipulate the image in the Layout.

Alternately, you can leave the processed job in the Queue and simply open another copy of the same Layout – this will not affect the previously processed Layout, or any that are currently open in Kothari.