This map was drawn in the summer of 2004.
It’s been updated by including the six clubs who have also been in the league since then.
Three clubs were relegated, then promoted again, in this 3-year period: FC Metz, RC Strasbourg, and SM Caen.
In England, these types of teams are called yo-yo clubs. West Bromwich Albion and Sunderland AFC are classic examples of this; a few years ago, Bolton Wanderers and Manchester City FC also had this unwanted distinction.
I did a search, and it looks like the French also use the term…albeit as “yoyo.”