Whenever I export a MN notebook to OmniOutliner, and open that MN-exported OmniOutliner file in OmniOutliner, I get the following message:
“Old file format: some features are disabled”
When I click on the " i " icon beside the error message, the following text appears:
“This older format does no support some more-recent features OmniOutliner features. You can upgrade the document to the current format to enable all features.”
This has been happening for quite some time (well over a year, I think), so maybe it’s time to fix this problem.