I also just noticed that notist seems to have a relatively nice import/export path which may also be available for some too. I love that their site says this:
One thing we very much believe in is that you should own your own data. As such, we didn’t want to just suck your data into Notist and leave it at that. Instead, we’ve built a tool that gives you access to the content as HTML and JSON, ready for you to take away today.
Lanyrd is currently up, let us grab your data for import into Notist! https://t.co/QdYsSKIF1L
— Notist (@benotist) January 29, 2018