Save only Saves Part of Sprite? VBA-M

[NowTHATSWhatICallMusic]

I'm using VisualBoyAdvance-m on my Mac to extract the arena backgrounds from the WWF games for the GBA. When I go to "Map Viewer" I can see each frame of the background fine in a little preview box and can scroll it to see the entire thing but when I hit save it only saves the top left partition of the image. No matter what I do. It clearly knows about the entire image but won't save it?


which always gives


How can I save the entire image without having to manually scroll it and screenshot?