Firs, let me tell you this plugin is big time saving anyway.
Once I find out how to manage this issue, the rest is downhill, since I can always delete the link data extra field and the same-name pages will be recognized next time (it did so as soon as I activated the plugin, with pre-existing pages)
Now my issue:
I just edited a child page (broadcasted page?) and the next time I updated the "parent" page ( broadcaster? / Original? ) a new page was created next to the edite one (on the blog selected before), with a -2 at the end, I assume I'll get repeated pages every time I edit a child (broadcasted) page. Not good.
Now, I deleted both (broadcasted and broadcasted-2), and made another change to the original Page, and this time it's not broadcasted (duplicated?) anymore, no matter how many times I edit it that original.
Not only that, but I can't even remove the checkmark from the selected blog, so I can't go back to broadcast it to that blog.
So, it seems the behavior is inverted:
It should be persisting on re-broadcasting deleted pages, but not if it's been edited, but it's doing the opposite, i.e. breaking the link when deleted, persisting when child is edited.
note: I also emptied the trash when I said I deleted the child pages.