I'm relatively new to CAD and are using it for shipmodeling. As such I would have an image of old plans from which I am building data. However as I've been experimenting I've found that when I've saved, closed and then returned to the program - the image has disappeared. The outline of where it was still highlights, and can be selected but the image itself is not visible.
Is there a reason this happens.
I've checked draft mode and normal and it makes no difference.
I've tried re-adding the image - it ends up on top of all my work, hiding it.