Issue with iscsi - how to remove targets not showing in pve web interface ?

Hi PVE experts!

I'm having an issue with iSCSI (which I am experimenting for the first time). I did many tests trying to figure out the best options for setup, and ran into a situation I would like advices for.

Basically, some previous configs are "stuck" into PVE. I did not delete them correctly, so now they don't appear in PVE interface, but are still active, trying to login to targets that don't exist no more...

I can see them listed in/etc/iscsi/nodes and /etc/iscsi/send_targets... How can I remove them ? Simply by deleting the directories and files (which ones?) ? Or is there a command to use ?

What's the best way to deal with this situation ?

Thanks for your advices
Guillaume