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OneToMany/ManyToOne mapping, children are not deleted with update (PUT)

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I'm still struggling and fighting to get a OneToMany/ManyToOne working. The examples I have found till now, have the same issue and I have also found here the question but not the solution or I do not understand it.

I have the two Entities:
parent Employee @OneToMany:The Child side: @Many-To-One:

The update employee service implementation:

And this is what I inject with Postman the create (POST):

I have two "employeeModelLogging" records at the time of creation of an Employee.

Now I do an update with postman:

When I execute the update, than there are still two records in the database. (It is not a problem to update fields from the employee or department, etc. This is working fine)

I have tried this, by removing the second recordThe second loggingModel is removed from the JPA I think, but not in the database. But I this, if this should work, than at least I know which way I have to go...

I hope that someone has an idea and can tell me what I'm doing wrong...
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