TYPO3 Core

If you want to copy a sysfolder or a page where you have entries within like seminars (seminar manager from Oliver Klee) or News (tt_news) or calendar entries (cal) a heavy problem occurs. TYPO3 prints several mysql errors and the backend page is not loaded. Copied entries become uid_locale=0 in the database which breaks the related extension backend formulars.

The problem has been tracked by the seminar team to the following lines in
t3lib_tcemain::remapListedDBRecords_procDBRefs():

// If a change has been done, set the new value(s)
if ($set)       {
        if ($conf['MM'])        {
// FIXME $theUidToUpdate is undefined
                $dbAnalysis->writeMM($conf['MM'], $theUidToUpdate,
$prependName);
        }

See more information at the bugtracker of the seminar extension https://bugs.oliverklee.com/show_bug.cgi?id=1703
(issue imported from #M7724)