[TYPO3-mvc] Update relations to inline objects

[Dirk Rauscher]

Hi members

my 'patient' object has a property 'protocol'. In TCA the 'protocol' is 
implemented as inline relation and only 1 protocol per patient is allowed.

When adding a protocol to a patient in the backend this rule is complied.

But when I call the setProtocol($protocol) method of the patient object 
with a new protocol object, the relation to the previous protocol is kept.

So when I edit the patient in the backend it has two (or more) protocols 
assigned.

I've set config.tx_extbase.persistence.updateReferenceIndex = 1 but it 
has no effect on this issue.

How do I have to cut the relation to 'old' inline objects?

Kind regards,
Dirk