Issue with PST files not spitting during a migration (4288658)

A requirement exists to split PSTs into predetermined sizes. At the moment the Parameters in the Parameters Reference guide relating to PST size appear not to be working.

At present the Reference Guide specifies the following:

MaxLargePstSize=<########>
Type: integer. Optional. Default: 19500000
MaxLargePstSize=625000

Specifies the maximum size (in kilobytes) of Large PSTs (Outlook 2003 or 2007 Unicode PST files), beyond which the Data Migration Wizard will split the file
into two or more files. This parameter is ignored for users running Outlook 2002 or earlier. Valid values are 0 ≤ x ≤ 20971520.
,

MaxPstSize=<#######>
Type: integer. Optional. Default: 1500000
MaxPstSize=625000
,

The maximum size (in kilobytes) of PSTs (for Outlook 2002 and earlier PST files), beyond which the Data Migration Wizard will split the file into two or
more files. Valid values are 0 ≤ x ≤ 2097152.