Take a look at the Backlinks report in the Backlink Analytics tool. How would you explain to your client that there are backlinks with New and Lost status at the same time?

This backlink was added less than a month ago and deleted shortly after adding
The New status is for the Source page and the Lost is for the Target page. The Source page has added a backlink recently, and the Target page has already deleted it
There is a mistake in the backlink, you should check and fix it

The correct answer is:

This backlink was added less than a month ago and deleted shortly after adding.