[rules-users] Banking Example 4 to 6 - sorting incorrect

Hi, I'm new to Drools and just working my way through the examples / tutorials in the Drools Expert PDF. I'm using the 5.5.0 Final runtime. When I run the BankingExamples 4 - 6 the results are not ordered in date order as the tutorial suggests they should be. This is easily resolved by changing the conditionals from: date < $date to: date.time < $date.time in the rules packages, but it worries me that the examples seem to suggest that the sorting should be correct as is. A colleague of mine has also run the examples with the same (incorrect) results. Does anyone have any idea what's happening here? Is this something that used to work in a previous version of the runtime but has regressed, or a mistake in the example code, or something else entirely? Regards, Pete