When a list is uploaded to a Real Magnet group with 0 records, the Real Magnet group will not reflect 0 recipients. This is the default setting for accounts.
For example, if the Group already existed in Real Magnet with 34 recipients in the group, and a list was uploaded today with 0 records in the file – the Real Magnet group will still reflect 34 recipients.
If the Group in Real Magnet should be a reflection of the list uploaded, meaning 0 records, then Zero Out on Upload should be configured for the Real Magnet account as True.
Zero out on Upload can be configured as true with a case to support.