it hard to see what's going on, some do look to line up ok on a 1 min chart, others do not. that may be a data thing, but there are more trades that don't line up than do. it needs more work obveously.
i think the losing set of trades are telling in that it appears, at least from the evidence of the way they were trading previously, that trades were not closed for a profit within a minute or so, even though the evidence is they could have done. but were left open far longer than normal (for them) and closed en masse at the loss.
Is the list of trades posted somewhere?