What I'd like is to avoid the tail (file conversion glitch) wagging the dog (available programs and workflows).
With any solution being lower friction than moving from lines to paragraphs.
Dynalist and Workflowy appear fine for importing each other's opml exports single lines and all.
The problem comes with conversion to markdown.
Typora import concatenates single lines.
MarkText import concatenates single lines.
As do online converters.
I don't understand OPML, but it seems to be a difference of opinion about a setting relating to single lines. But I don't know the setting or how to change it in a simple way. I assume
that if I learned OPML, and
used Pandoc directly, there might be a solution. But I also suspect that route would be higher friction than using paragraphs only.