Printing or Exporting Reports

I’ve exported my collections on different occasions. Each time the export includes every collection in my list. How can I export only one collection out of several collections?  I have over ten different collections but need to export only one. If this is not an option I would suggest adding it. Thank you. 

I wanted to say choose anything but ‘All collections’ but if you filter the export option isn't there.

But there is a box with ‘collection’ in the export settings, so you should at least be able to sort for collection and delete everything you don't need for now.