If its Report Writer that you are taking about - create a Advanced SQL report to extract the same report and use the below query:
Note: MODIFY THE SELECT query accordingly. The below query is just an example
SELECT
Nodes.Caption AS NodeName, Interfaces.Caption AS Interface_Caption, Interfaces.HighPercentUtil AS High_Percent_Utilization
FROM
Nodes INNER JOIN Interfaces ON (Nodes.NodeID = Interfaces.NodeID)
WHERE
(
(Nodes.Caption NOT LIKE '%map%')
)