I create a single send journey and selected as entry source a data extension.
I can see I have 200 contacts then I activate the journey and all those 200 contacts went through it.
However, I added once the journey has been activated one contact to the data extension.
I can see in the record count 201 contacts, however that contact doesn't go in.
Is this working as designed? How can I perform changes in the data extension and keep inserting the contacts in the journey without creating a new version?