Up until at least 5.0.10 the maximum number ever returned was 5,000 regardless of what was specified here..The effect of a fix in 5.0.10 is questionable. Tasks such as LDAP which use the FT lookup methods will also return max 5,000 docs. To avoid this simply remove any FT index that exists on the NAB's you are looking up.. this forces the non FT method to be used when searching and will return any number of documents.