I recently made a few backgrounds and saved them as PNG files, wasn't sure to click on Interlaced or the other option ..... so I made one of each.

Well, now I tried to open the files, and moved one background (mat) to the other, but it turns out that neither of them are able to be resized !!! The handlebars don't appear and I can only move them around...
Anyone understand what I'm doing wrong?
How do I save the elements and the backgrounds I make?