Files disappearing?

[msdobrescu]

Luet version:

luet version 0.32.5-gd5d21653d7313ff396c0511af402834c89974ee3 2022-06-07

CPU architecture, OS, and Version:

Linux PCONE 5.15.74-mocaccino #5.15.74-Mocaccino SMP Wed Oct 19 13:38:00 UTC 2022 x86_64 11th Gen Intel(R) Core(TM) i7-11700K @ 3.60GHz GenuineIntel GNU/Linux

Describe the bug

Basically, at this line the .use file (and others) that should setup the build for the package (not only its deps) is there (along with all deps .use files etc.). I've run a cat /etc/portage/package.use/-.use command and it lists its contents.
However, few lines later it is no more. I've run the same command, it's gone. Is this expected? Is some images merge performed that wipes it?

To Reproduce

Build a package, follow the output.

Expected behavior

The .use file to be kept during the entire build process once copied there.

Logs

Additional context