| A | ↛ | CollectionPropertyMetadata removed |
| C | ↘ | D | XmlDriver::addMetadataFor() got worse |
| B | ↘ | C | EventListener::replacePersistentCollections() got worse |
| A | ↛ | CollectionPropertyMetadata::setType() removed | |
| A | ↛ | CollectionPropertyMetadata::toArray() removed | |
| A | ↛ | CollectionPropertyMetadata::__construct() removed | |
| A | ↛ | CollectionPropertyMetadata::setOf() removed |