You can always extract your files with IsoBuster and then burn them all at once.
About the Volume tab, try this: right-click the device, let's say it's E:, BrandX device. Click properties. If there is no tab Volume, try pressing the tab Hardware, then selecting the BrandX device displayed, and selecting properties for it. Now there should be a Volumes tab - it is what I need to do to access the tab, I do not guarantee it will work for you. And, I am not sure if the additional sessions will be visible that way. But I am positive that you can extract the files using IsoBuster.