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Can you share the workflow?
Does the Results window show "7 iterations were run" for the batch macro or just 1?
Should the Input(7) GroupBy field on map_batch(157) be [none], or should it be product_name like the Control Field?
Also, inside the map_batch macro, the Filter/Action need to be changed. The Filter is configured using the Custom Filter, but the Action is updating the Basic Filter (which won't have any affect on the filter results since it's set to Custom). Either change the filter to the Basic Filter option, or Change the Action to update the 'Expression - value=' field.
I typically use the Custom Filter, so I suggest changing the Action to update the expression field with the following formula:
"[product_name] IN("+[#1]+")"