dnf list extras

Dear all,

I recently did the upgrade from F29 to F30. Afterwards, I wanted to
clean up a bit so I did a `dnf list extras` to list all packages that
are no longer available through the repositories. This returned a rather
long list:

apache-commons-codec.noarch
apache-commons-io.noarch
apache-commons-logging.noarch
apache-commons-net.noarch
bcel.noarch
hamcrest-core.noarch
jakarta-oro.noarch
javamail.noarch
jdepend.noarch
junit.noarch
kernel.x86_64
kernel.x86_64
[...]

I then tried `dnf list extras
--disablerepo=fedora-modular,updates-modular` which returned:

kernel.x86_64
kernel.x86_64
kernel-core.x86_64
kernel-core.x86_64
kernel-debug-devel.x86_64
kernel-debug-devel.x86_64
kernel-devel.x86_64
kernel-devel.x86_64
kernel-modules.x86_64
kernel-modules.x86_64
kernel-modules-extra.x86_64
kernel-modules-extra.x86_64

That's more what I expected. So my question is: Why are *more* packages
listed as not available anymore when those repositories are enabled than
when they're not?

Regards,
eqie