Clips missing on a duct bezel

[wheeler]

After taking off the duct bezels that are under the front seats, 2 white clips turns out to be missing on the passenger side bezel. I moved a clip from the other bezel to this one. Now both of them has 3 clips.

The clips are hard to remove, can not be pulled off easily. So I'm sure I didn't lose them when taking the bezel off. It should be a building quality issue.

Also, the part number on the duct bezels are 1877852-00, different from 1877851-00-E on the parts catalog.