can not create nodisk image when overwriting the linux config

[RaphaelKlink]

Hey,

when i try to overwrite a linux config with another linux config in the firemarshal config, i can not create a nodisk version. It will always create the correct image, but in the disk version even when i add -d . The same problem was described here: https://groups.google.com/g/firesim/c/eb4GNmKxryc/m/Dm-V1q2VBwAJ

linux.json:

{
"name" : "linux",
"base": "br-base.json",
"linux" : {
"config" : "kernel-config",
"modules": {}
}
}

kernel-config:

CONFIG_SPI=y

I have done some searching and i was able to narrow it down.
The problem is with my new linux config.
If I overwrite another linux config, it will forget the nodisk option during image creation.
The image still is called *-nodisk, but it is a disk image.
Did i do something wrong or is there an error in firemarshal?

Greetings
Raphael Klink