Wait, Phil Roman of Film Roman (of Bobby's World and 1992-now Simpsons fame!) Was supposedly lending a hand on Atomic Betty!? I do know that PRE (Phil Roman Entertainment, his own spin-off firm as shown here) also did "Grandma Got run over by a Reindeer" special in 2000.
Because CN only had the license to air this Canadian series at the time, plus, poor Advertising and ratings could play a factor as well, hence the reason why the rest of the series (The 2006 and later episodes) would appear on the now Warner Brothers/Discovery owned Discovery Family by around 2010 or so. (it was originally called The Hub, a Hasbro/Discovery joint venture)