Important: #60357 - CType and colPos locked for translated content

Description

Starting with TYPO3 v13.3, the fields CType and colPos of connected tt_content translations are locked to the values of their default-language parent. Both fields are now configured with 'l10n_mode' => 'exclude' and 'l10n_display' => 'defaultAsReadonly' in EXT:frontend/Configuration/TCA/tt_content.php.

This prevents editors from accidentally assigning a different content element type or column position to a translated record, which previously caused silent rendering inconsistencies: when the default-language record changed its CType, the translated overlay would keep the old type and could render incorrectly or not at all.

Impact

In the TYPO3 backend, the Type and Column selectors are now read-only when editing a translated content element in connected translation mode.

An upgrade wizard (synchronizeColPosAndCTypeWithDefaultLanguage) is provided to synchronize connected tt_content translations whose CType or colPos differs from their default-language parent.

Warning

The upgrade wizard overwrites CType and colPos on every connected translation that currently differs from its parent — including records where the difference was intentional. Back up the database and review affected records before executing the wizard.

Extensions or integrations with connected translations that deliberately use different CType values should align their content to use the same CType across languages.