Newly imported lessons have incorrect word count

I recently imported several lessons into a course but the numbers don’t add up at all. Here’s what I’m seeing:

New words (88%): 5426
LingQs: 121
Known words: 336
Total Words: 4810
Unique Words: 2013

How exactly are these numbers supposed to breakdown?
The document I imported has 14660 total words. Of those, 6170 of them are unique. Those numbers don’t seem to be reflected here at all.

Why does the number of new words dramatically exceed the total word count?

Can you send a link of that course to support(at) We will take a look. Thanks!