Oh, I see. Mystery solved then.
Certainly I created additional levels which I removed when I deleted all the content, leaving only the first level with the background image.
I hope it can be fixed easily. It's not a big problem, but it's more annoying when the imported background image has a large size, like the one I used.
Puybaret, if for some reason the fixing implies many or complex changes, I guess at least you could make a simple substitution of the actual image file for a dummy image file (0 bytes or 1x1 pixels), that way the wasted space is released.
Thanks and regards.
----------------------------------------
If a long walk every day were healthy, mailmen would be immortal.
