Why don't the Record Count & Pages areas update when I run a custom script using unset()?
Reports, Custom Scripts, Oracle B2C Service 20C and earlier
A report shows an inaccurate Record Count & Page Count, which does not correspond with the actual number of records displayed by the report.
This content is applicable for Oracle B2C Service up through version 20C. For versions 20D and later, see Answer ID 11780: Custom Scripts Replacement by Analytics Extensions for best practices.