So, the question is how satoshi posted a forum link (domain) before creating this forum (domain)? The posts hadn't edited after bought Bitcointalk domain.
I don't know if I missing something since I am not a tech guy. Hope theymos will clear that matter.
It could be an enforcement to replace all hyperlinks for posts, topics from old to new forum domains. I think it is possible to do with administrative rights.
It is not considered as Editing time.