Tabs dissapearing

[SkifAlef]

Guys, I need help here.

I'm trying to edit eq2_journal_quest.xml. I want to add some new pages with some info into it.
What I've done:
1. Added new page (let it be VeryNew) into TabPages page and put it in Z-Order after all existing pages.
2. Added new Data item VeryNew into TabSource data source and put it in Z-Order after all existing Data items.
3. Set all attributes as for Completed page (size, packsize packloc, enabled, visible, etc.)
4. Added some Text to fresh page just for testing purposes

After this I load game and all the tabs dissapeared in the journal window. Quest details page was also dissapeared.

What I'm doing wrong?