To your other question: We use stock_picking_groups in production on 6.0. (hence the branch name /6.0 :)) As we don't have 6.1 in use, I can't verify it there.
To your other question: We use stock_picking_ groups in production on 6.0. (hence the branch name /6.0 :))
As we don't have 6.1 in use, I can't verify it there.