New retro-dated blogs not showing in RSS
 

When I add a new blog with today's date, it shows up in RSS. When I update an old blog that was previously showing in RSS, it correctly appears in RSS flagged as "UPDATED".

However, when I add a new blog entry with an old 'posted date' in 2008 (because I'm selectively re-issuing old archived blogs from another site), it does not show up at all in RSS feed.

How can I get all blogs that I add to my website to show up in RSS feed?