Hi Jean-Lou,
I have slightly bad news for you. Performing the aliases was supposed to remove the kudo points.
The contributors on projects jldupont and MediaWiki Extensions were receiving kudos from you prior to the aliases because you'd stacked those projects. When you claimed the contributors by aliasing, the system no longer gave them kudo points from the stack because you can't kudo yourself.
The way to fix this is to get one of your users to stack your projects and/or give you a kudo.
Sorry about the confusion,
Andy
PS Nice pipes! I'd stack them if they were a project.