TYPO3 Core

I have tried in the Typo3 Core to translate my Content-Elements. I have create, for easier handling for a editor, own content-elements with flexforms.

After copy the elements for translate, I have missed the Localisation All - Button also the Synchronisation - Button.

I have the following configuration for the flexform for my IRRE-Element

<TCEforms>
    <exclude>1</exclude>
    <label>additional Fields</label>
    <config>
        <type>inline</type>
        <foreign_table>tx_fdmailchimp_domain_model_additionalfield</foreign_table>
        <foreign_field>content_uid</foreign_field>

        <minitems>0</minitems>
        <maxitems>99</maxitems>

        <appearance>
            <useSortable>1</useSortable>
            <collapseAll>1</collapseAll>
            <levelLinksPosition>top</levelLinksPosition>
            <showSynchronizationLink>1</showSynchronizationLink>
            <showPossibleLocalizationRecords>1</showPossibleLocalizationRecords>
            <showAllLocalizationLink>1</showAllLocalizationLink>
        </appearance>
    </config>
</TCEforms>

When i try the IRRE -Element in an Record, then i will be see the Buttons and I can translate the Inline-Records from a Record