After opening and closing a file in a sub-folder

[metallithrax]

After thumbnailing all images in sub folders, if I open an image (to crop or something) and then close it, the new browser view is only of the images in the folder that the image came from. Is there a way to keep the complete thumbnail view open. I know I can do it by opening the image ina new instance of xnview, but is there a way to do it within 1 instance of xnview?