In the GUI tree listing, you can click on the down arrow/chevron and select the top option to "Show Running Config". It will then open another small window that has a scrollable listing of the config. You can just do a select-all to highlight the text and then copy it. Then just paste it into a text doc for backup.
![75e74d74c52a473da41f0aaf947f12c5_85ecde68-483a-4b23-9d2d-14388b472546.jpg 75e74d74c52a473da41f0aaf947f12c5_85ecde68-483a-4b23-9d2d-14388b472546.jpg](/t5/image/serverpage/image-id/4516iE00CA95C72AF77C1/image-size/large?v=v2&px=999)
![75e74d74c52a473da41f0aaf947f12c5_85ecde68-483a-4b23-9d2d-14388b472546.jpg 75e74d74c52a473da41f0aaf947f12c5_85ecde68-483a-4b23-9d2d-14388b472546.jpg](/t5/image/serverpage/image-id/4516iE00CA95C72AF77C1/image-size/large?v=v2&px=999)