Thanks.
I can see what the issue is now, the links begin with …/ which means the next level up. But my project folders are in a subfolder of the folder ‘Projects’. I can manually change the links to start …/…/ or take up the suggestion of using Notepad ++ to change them in bulk. Thanks for helping with that. For now I want to experiment with different ways of importing into Joplin following the folder structure there that I want to have in Obsidian. That might mean the export will bring the folders into Obsidian in the right relationship.
If I find anything useful I’ll report back.
Thanks for your suggestions