Some more information : I downloaded the file, and must admit that I was quite suprised about the very beginning : the music is very different from the one that has been used for 5 or more years now... So I checked, and this particular episode is the second one ever. It was made in 1997 and aired on january 26th, 1998. Another particularity is Mimie Mathy's voice "off", giving information about the little girl. Nowadays, she just addresses to herself. It is funny to see how the series evolved, and can be used as a witness of the way films were made at different times (90s,2ks...).
Other fun fact : in the latest episodes, Josephine talks about historical characters she met, but in the 2nd episode, it is said to be her 127th mission

Well, enough about it, thanks for those who took the time to read !
Reasta