[TYPO3-mvc] Objects created through eID action remain empty

[Daniel Völkel]

I found another thread in the forum of typo3.net [1] which gave me a new hint. 
My objects are saved correct as long as all caches are clear, especially as long as the table 'cf_extbase_datamapfactory_datamap' is empty. 

This brings up two possibilities:

1. my mapping is wrong
2. there is a bug in typo3 cache 

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[1] http://www.typo3.net/forum/thematik/zeige/thema/117985/