This node takes two matching length input lists. It scans the primary list to clean for null values, and then attempts to replace those null values with matching items from the backup list used for null replacement.
This will take a list of Strings, a single string to ‘find’, and another list to Filter. If it finds a match in the string list, it will allow the matching ‘filter list’ element/s through, and will show them in the Matching output node. Essentially this a wrapper for String.Contains and List.FilterByBoolMask to make it a little easier to use.