No, that's wikipedia which is not fully correct for me.
Has been founded in 2016 the merger of pro team from Chamonix & Morzine. Merger which failed. But both Chamonix and Morzine clubs still existed during this season, whith their other sections (amateur / youth).
Then, after failure of merger, both clubs took back their pro team. In fact, not really : only Chamonix keep the pro team, using the spot of pro Chamonix-Morzine. Morzine had to restart back.
But Chamonix team is still based on old team. What is true is that the pro company, as for other french clubs, opened recently; with a split between pro company & amateur section. So the pro company, legally speaking, exists from 2017. But the team is only the same as two years before, it only needed a pro company to keep on existing.
For me, the best is too put both old & new together : with only a change of name in 2017. As for other pro french clubs.