Tasks funding - left over task funding

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I have had a task which was done by one person. However as you know when you did post your own task. MyLot reduces the fee for all possible workers from your funds, to make sure they get paid. Now 1 person did the task, got paid but the remaining funds still are 'somewhere'. Do you get these funds back? The task is expired, the worker got paid. I am just wondering how this works. Could not find anything about this in the FAQ so. Maybe one of you knows?