Hi,
    I have a whole slew of objects that are using the preupdate method to 
update a record timestamp on persist. All of them are working correctly except 
for a small subset of classes that use inheritance. I've implemented and 
annotated the preupdate method on the base class and I have three subclasses 
(all of the base class) that provide their own fields for a single table 
inheritance model. When I try to persist any of the three, I get an exception 
that the record timestamp is null. I've been digging through the docs and I 
thought it said that this should work in an inheritance hierarchy when the 
preupdate method is in the base class. Did I misread it, or could something 
else be going on?

Thanks,

Derek

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