We have @OneToMany biderectional association (with mapped by):
Ticket -> comments (@OneToMany)
Comment -> ticket (@ManyToOne)

Follow steps:

1. Insert comment -> this creates CollectionChangeWorkUnit on ticket
2. Update ticket -> this creates ModWorkUnit on ticket
3. AuditProcess calls merge -> second ModWorkUnit returns

Created ModWorkUnit should have comments_AUD = true, but the value is false.

I suppose the same issue happens with AddWorkUnit.