First of all, I'm sorry for the inconvenience.
Your questions can be awkward using a translator.
I'm experiencing issues with Atlas settings not automatically applying when I exported from Unity after working on the animation using the latest version of Spine (4.2 and above).
Unity needed a version of Spine 3.7 and exported it from 4.2 and later to 3.7 but had no choice but to warn that Vezier curves and other data were lost.
Anyway, I couldn't automatically apply Atlas when I imported the spa files from unity. But it was possible to create and apply Atlas data manually, but it takes too long.
Can you suggest a solution?
Present photos and error images of the texture packer.
Atlas is automatically unavailable when you send the Spine file to Unity
tell I'm experiencing issues with Atlas settings not automatically applying when I exported from Unity after working on the animation using the latest version of Spine (4.2 and above).
Unity needed a version of Spine 3.7 and exported it from 4.2 and later to 3.7 but had no choice but to warn that Vezier curves and other data were lost.
Please note that if you're using the spine-unity runtime version 3.7, you have to also export from the respective Spine Editor version. It's not sufficient to export from Spine Editor version 4.2 with target version 3.7, this is only for re-importing your skeleton in older versions. If you've already exported from Spine Editor version 3.7, it's fine.
Which version of the spine-unity runtime (name of the unitypackage, also listed in Assets/Spine/version.txt) are you using? If you're not using the latest version from the download page, please have a try whether updating resolves your issues:
https://esotericsoftware.com/spine-unity-download#Older-Versions
Otherwise, how do you copy the files to your project? Where is each of the exported skeleton files placed in your project?