Nozbe_Export.txt Backup File omits Completed Actions

Since the off-line backup says it backs up “ all of your Nozbe data (excluding files attached to projects) to a single, editable text file …”, I thought I should expect to see all of my action items in the file, including those marked as complete. I don’t see the completed items, and I’m afraid that, if I were to restore this file, it would overwrite the web database, removing the completed items.

I bit the bullet and did an export, followed by a restore, and, lo and behold, the completed items were not overwritten. Why am I not seeing the completed items in the export.txt file?

I was hoping to use the export.txt as a periodic weekly/monthly archive to document the state of my life (and progress made), but the current file does not allow for this. This can be a showstopper for me if I cannot trust the backups to be a complete dump of what is in the web database.