Greetings, I'm working on upgrading to v6, and in the process I'm getting an error on Step 31/44 in DBUpdate-to-6.pl, clearly caused by some error in the database. I'm trying to find that error to correct it, but the error message isn't giving me enough information to do so. Does anybody have any suggestions on how to find the offending data? Once I find it, then I can figure out what to do to correct it. Step 31 of 44: Post changes on article related tables ...         - Reseting auto-incremental if needed for article table.         - Performing needed actions on article_data_mime table.         - Performing needed actions on article_data_mime_plain table.         - Performing needed actions on article_data_mime_attachment table.         - Re-create foreign keys pointing to the old article table. [Thu Sep 19 13:31:20 2019] DBUpdate-to-6.pl: DBD::mysql::db do failed: Cannot add or update a child row: a foreign key constraint fails (`otrs`.`#sql-5e0_29`, CONSTRAINT `FK_ticket_history_article_id_id` FOREIGN KEY (`article_id`) REFERENCES `article` (`id`)) at /opt/otrs/Kernel/System/DB.pm line 470. ERROR: OTRS-otrs.Console.pl-Dev::Code::CPANAudit-10 Perl: 5.16.3 OS: linux Time: Thu Sep 19 13:31:20 2019  Message: Cannot add or update a child row: a foreign key constraint fails (`otrs`.`#sql-5e0_29`, CONSTRAINT `FK_ticket_history_article_id_id` FOREIGN KEY (`article_id`) REFERENCES `article` (`id`)), SQL: 'EXECUTE FKStatement'  Traceback (5899):    Module: scripts::DBUpdateTo6::Base::ExecuteXMLDBString Line: 394    Module: scripts::DBUpdateTo6::Base::ExecuteXMLDBArray Line: 342    Module: scripts::DBUpdateTo6::PostArticleTableStructureChanges::_RecreateForeignKeysPointingToArticleTable Line: 419    Module: scripts::DBUpdateTo6::PostArticleTableStructureChanges::Run Line: 67    Module: scripts::DBUpdateTo6::_ExecuteComponent Line: 157    Module: scripts::DBUpdateTo6::Run Line: 69    Module: scripts/DBUpdate-to-6.pl Line: 87 ERROR: OTRS-otrs.Console.pl-Dev::Code::CPANAudit-10 Perl: 5.16.3 OS: linux Time: Thu Sep 19 13:31:20 2019  Message: Error during execution of 'EXECUTE FKStatement'!  Traceback (5899):    Module: scripts::DBUpdateTo6::Base::ExecuteXMLDBString Line: 397    Module: scripts::DBUpdateTo6::Base::ExecuteXMLDBArray Line: 342    Module: scripts::DBUpdateTo6::PostArticleTableStructureChanges::_RecreateForeignKeysPointingToArticleTable Line: 419    Module: scripts::DBUpdateTo6::PostArticleTableStructureChanges::Run Line: 67    Module: scripts::DBUpdateTo6::_ExecuteComponent Line: 157    Module: scripts::DBUpdateTo6::Run Line: 69    Module: scripts/DBUpdate-to-6.pl Line: 87 -- ----------------------------------------------- - Nick Bright - - Vice President of Technology - - Valnet -=- We Connect You -=- - - Tel 888-332-1616 x 315 / Fax 620-331-0789 - - Web http://www.valnet.net/ - ----------------------------------------------- - Are your files safe? - - Valnet Vault - Secure Cloud Backup - - More information & 30 day free trial at - - http://www.valnet.net/services/valnet-vault - -----------------------------------------------