Drop=(Name=name)

    Specifies that the named after-image journal object be deleted.
    You can drop an after-image journal object while users are
    attached to the database, but the named after-image journal
    object must not be the current .aij file or be waiting to be
    backed up. When the Drop qualifier is specified with the Alter
    or Add qualifiers on the RMU Set After_Journal command, the named
    after-image journal object is dropped before any after-image
    journal objects are altered or added.

    Each after-image journal object to be deleted is specified by
    the required keyword, Name=name. This specifies the name of the
    after-image journal object to be dropped, which must match the
    name of an existing after-image journal object.