Because the trinity core (4.3.4) doesn't have the option in the quest_template_addon table, and the mangos3 has that option only in the quest_template table.
And when i use WowPacketParser from my sniff collection , emucoach table structure doesn't work and i have to fall back onto the trinity core DB structure and modify the collection from there to fit into the emucoach structure. On top of that it is not a big deal to make the query to fit both structures , with update you just need to leave out the tables that don't match up. then test in emucoach then export.
On a side note my DB also runs Mangos0,Mangos1,Mangos2,Mangos3 servers all at the same time, or TCLegacy 4.3.4 or EMUCoach or Ark_Core_ng or TrinityCore Master. 8 Wow DB Collection on top of my sniff WPP DB with TC_master for data imports.
Truice is good for minor fixs but to bulk change from other sources i found it quicker to run query on the DB.
Example :SELECT * FROM `quest_template` WHERE Id in(25133,25165,25167,25168,25169,25170,25171);
