I downloaded both a table report (shown data) and an issue report (raw database fields), both in CSV, from a specific advance query result. Upon examining both, the total number of records in the issue report exceeded the table report by 6 records.
Issue ID 24941, Series ID 1937, Marvel, Amazing Adventures (1970, Series) #11 Mar-72
Issue ID 1213094, Series ID 1937, Marvel, Amazing Adventures (1970, Series) #11 [British] Mar-72
Issue ID 24160, Series ID 1570, Marvel, The Amazing Spider-Man (1963, Series) #95 [Regular Edition] Apr-71
Issue ID 23342, Series ID 1571, Marvel, The Avengers (1963, Series) #74 [Regular Edition] Mar-70
Issue ID 23401, Series ID 1860, Marvel, Captain America (1968, Series) #124 Apr-70
Issue ID 24166, Series ID 1482, Marvel, Fantastic Four (1961, Series) #109 [Regular Edition] Apr-71