Breaking: #75829 - Removed handling of pre 6.0 files when importing¶
See Issue #75829
The functionality for importing
*.t3d files created from installations lower than TYPO3 CMS 6.0 has been removed.
The following public method has been removed:
Importing files into TYPO3 v8 that were created from a TYPO3 4.x installations will result in unexpected behavior, especially when dealing with files and relations.
Calling the PHP method above will result in a fatal PHP error.
Any installation using the t3d import functionality for importing files that were created from a TYPO3 instance older than TYPO3 6.0.0.
It is recommended to import files in a 6.x or 7.x installation and export the files from there again to import them in TYPO3 v8.