The conditions don't work when updating (not creating) entities using the Delegator.storeAll() method. E.g. the following condition does not work:
The indexProductKeywords service is called anyway when the product is updated and the autoCreateKeywords was "N" and stays "N". It works correctly for newly created products.
The problem is in the method GenericDelegator.storeAll(), where unchanged field values are not passed down to the store() method. The store method calls the ECA engine, which does not receive the unchanged values at all and thus cannot evaluate the EECA conditions correctly.