GIMP Question

[lindaholden]

Hi, I'm new to sublimation and am using GIMP. I have been trying to set up my template/positioning for mug sublimation but struggling with it and cannot find an online tutorial that answers my question. When I duplicate my image (so it will be pressed onto the front and back of the mug) I don't seem to be able to print it from GIMP. If I export it and print then I get the both images but if I print directly from GIMP then I only get the original image and not the duplicated one. What am I dong wrong? Is there a last step with the layers that I am missing? Thanks