I have installed MN4 on my mac (and iPad), and I have tried, multiple times to transfer my MN3 database to MN4 using my mac. It asks if I want to transfer, it opens up MN3, and then it just sits there and does nothing. I’ve updated to the latest version of MN3.
The only way I could get it to work is by using the iPad - which has cloud sync enabled.
I also have another machine that doesn’t sync to iCloud and I don’t use an iPad for the content on that machine, so I need the transfer to work on mac for MN4.
As a related issue, there is no option to restore or import from backups in MN4… is that a “to be implemented” ability?