Splitting Application into separate projects

I'd tried to split my domain layer (annotated EJB3) into separate project, from my service layer (EJB3 session beans) - that used to run together happily but I got the following error against each entity.
Exception [TOPLINK-198] (Oracle TopLink - 10g Release 3 (10.1.3.0.0) (Build 060118)): oracle.toplink.exceptions.DescriptorException
Exception Description: In order to use ObjectChangeTrackingPolicy or AttributeChangeTrackingPolicy, class com.davinci.capital.domain.tran.Tran has to implement ChangeTracker interface.
Descriptor: RelationalDescriptor(com.davinci.capital.domain.tran.Tran --> [DatabaseTable(TRAN)])
When I put the projects back together I still got the problem. I think it might be related to the enhancement process and somehow picking the un-enhanced code.
Is there someway to 'reset' a project/application? I tried removing the project (and leaving the source) and then creating a new one with the source still in place, but the error remains.
Any ideas?
Thanks
Michael
Message was edited by:
mmcgovern

Somewhat answered this myself.
Appears that I had some unenhanced domain class files lying around in the DAO layer - these where getting picked up instead of the enhanced ones.
However it appears I there is a problem having EJBs spread around different projects within the application. The above problem appears to be related to having two-way dependencies so I get two copies of classes file created - and it picks up the unenhanced one.
The real problem is that I can't have EJB's in multiple projects - its appears to only create an ejb-jar.xml for EJBs in the "target" project (embedded OC4J) - the EJB's in the related projects are ignored.
If could split EJBs into projects then I would not have two-way dependencies and the original problem goes away.
Any ideas?
null

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