Well, I am not sure exactly what the questions remaining are but here is what I have.
Some 50-60 Weasels were procured by Paul Emile Victor when he formed the EPF in 1947.
Some were used in the Arctic (Greenland) in 1948 and some in the Antarctic (Adelie Coast) in 1950.
I cannot find which Expedition your photo comes from. Lots of photos, but not yours.
Apparently, many vehicles remained in their respective area for years, the last returning to France in 1994 if my translation is correct.
If you need more, please be specific as I am translating from French websites and I am not always accurate.
Bill