Reordering Sources in a Footnote

I have a footnote that cites 10 sources, many of which have corresponding comments. I later decide that one of the source should be moved earlier in the footnote. Is there a way to easily change the order of the sources in that footnote? There are no up and down arrows, and dragging and dropping doesn't work. Do I really have to remove all of the sources and then add them back in the proper order—and retype all of the corresponding notes for each source?! Only to have to do it again if I need to make another change in the order of the sources?! Please tell me I'm wrong and am looking right over the obvious.

If this is not currently possible, please consider adding it soon.
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