Texture Atlas leaving out one piece of an image

Rowdster

So I have 3 horns that are all part of the same image yet only the top and bottom horns
are showing, and the horns on the other side are completely fine. I noticed in the texture atlas that it hadn't been made into a texture. I'm not sure why it's happening or how to fix it! Any help is greatly appreciated thank you!

(Image Below)

kudo(Staff)

Hello, @Rowdster
Thank you for your contact.
This is Live2D Support.
We apologize for any inconvenience this may cause.

For further investigation, please fill in all the information below and send me cmo3 file.
Live2D Software Version: (e.g. Cubism Editor 4.1.00 beta1)
OS & Version: (e.g. Windows 10, macOS HighSierra)
PC Model: (e.g. MacBookPro 2017)
Video card: (e.g. GeForce GTX 950M)
CPU: (e.g. Intel Core i7-7700)
Memory: (e.g. 8GB)
Illustration Software used: (e.g. Photoshop, ClipStudio, SAI)

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