Can I have the file return in Adobe Illustrator?
The problem with importing bitmaps into Adobe illustrator is that it automatically places them on white backgrounds with no transparency. If you opened this file in photoshop, which is a program that supports background transparency, you would see that the white box is no longer there because the images have been clipped. It doesn’t matter what format the file is saved in, Adobe Illustrator will always open it with that white background. If you want to edit these without the white background, you need to have a program that supports transparency.