In the absence of any response to enquiries about misleading information in the BBC online staff magazine, Ariel, it is probably worthwhile looking at the discrepancy in more detail.
This is the article in question. You should notice the article is currently dated 17th April 2015 at 9.15am. Now if you check this archive, made on 19th April 2015, you will notice exactly the same date/time information on the web page.
The present version is different from the archived version in at least one obvious respect: the photograph captioned "Future leaders? Adeluwoye, Abbey, Tezisler, Moncrieffe-Johnson, Pemberton and Berkeley with DG" was removed some time after 19th April, but that change hasn't been acknowledged by Ariel's editor, Claire Barrett.
Newsround Blog will, at a future date, consider why the page was edited.