I find it fascinating that someone will make an edit to Wikipedia but not check what the linked source says. (Looking at the edit history the locations were swapped but the old source remained).
Page is locked and I don't have enough wiki cred to edit it
@willhbr I think I have enough wiki cred but when I tried to look into this I just got myself a bit confused. It seems like parts of the film were filmed in both Norway and New Zealand. (whether the cited source says what is in the article is, of course, a consideration but there are others such as whether other sources should be cited in addition to or instead of that one). I put my findings in a comment under "New Zealand or Norway?" at https://en.wikipedia.org/wiki/Talk:Siachen_Glacier
@soaproot my understanding (from memory) is that most of the helicopter chase (and camp area?) is filmed in NZ, and the final fight scene after the helicopter crash is in Norway.
@soaproot yep that seems to be correct (https://www.movie-locations.com/movies/m/Mission-Impossible-Fallout-2.php) not sure how that stands on wikipedia source quality