Locations on map after interrogation - MGS5

So I've interogated a few guys on a side quest (the blueprints) and it was fairly straightforward when looking at the map to see the intel. There were big 'ticks'.
I'm now out in the wilderness, interrogated a few more which have all given intel, the map is marked as updated but I can't find out where these 'ticks' are. It feels like I'm missing a very simple mechanic.
Best Answer
From personal experience, it won't work unless the guy I just interrogated is still conscious. I interrogated him and immediately brought up my map and there it was.
The second I choked him out however the blinking dot was gone.
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