You cannot select just a folder with a specific selection rule: you need to make sure all the parent folders are at the right version (potentially in the DEV-STREAM
branch as well).
But in your case, I would rather try and access that old file though the extended pathname in order to directly access the content of that older version of that folder.
cd PathToFolder/folder@@/main/INT-STREAM/x/DEV-STREAM/2
(you might have to adapt that extended path, as I have replaced intermediate version numbers by 'x': do a property on the current version of that folder to see the exact extended path).
You can, after comparing the content of that folder, try manual resolutions of an evil twin, as described in :