lxc confusion

can someone help me figure this out:

sudo lxc-ls -f
my_container STOPPED

sudo lxc list
my_container RUNNING

so I stop my_container
I delete it

sudo lxc list
no container

sudo lxc-ls -f
my_container STOPPED


sudo find / -type d -name my_container
/var/lib/lxc/my_container
/var/log/lxd/my_container


I understand the commands lcx-ls (pre LXD) vs lcx list (LXD/LXC) but why is the container listed at stopped and not deleted?