Hi @Marie! Thanks for your quick reply. I let the uploader be for another day, but it never uploaded. I did split the file a bit, but then I tried just saving it as the “Comma Separated Values” .csv rather than the default “CSV UTF-8” format. That actually seems to be what’s making the difference.
It might be a combination of size and format, as the import on the larger of my split files is behaving oddly (populated some section headers and then started populating tasks and subtasks - remaining section headers still MIA). It is slowly but surely importing, so I’ll update you if it doesn’t finish the job.