Thread: OPML Bug
View Single Post
The OS actually does recognize it but doesn't turn it into a click-able link for you. Not sure how much quicker it is, but if you click into the row with the URL and then right-click on the URL, it'll highlight it and offer you the option to open the URL.

The other option would be to save it in the OmniOutliner format so you can save them as links.