I haven't had any experience with secondary assessments, unfortunately. The type of indigenous knowledge I've seen well documented that has perhaps been useful in these types of processes has been about historical land use and possible future land use for reindeer herding so that you get an understanding of how that area is actually used. That type of knowledge is, of course, useful for the future, as well, because it doesn't only concern the possible project that is coming.
On February 7th, 2019. See this statement in context.