I have also started to use v9. After the installation I run the tool C:\Program Files\QlikView\Publisher\Command Center Service\PubUpgradeTool\PubUpgrade.exe to migrate the Publisher database. I read about it in the release notes on page 4-5. This migration tool is not run automaticly when you upgrade to v9.
After that I could in the QEMC (Qlikview Enterprise Management Console) under the tab "source doucments" add triggers that said trigger after event. In this case I could control which files should load first and so on.
Then I made a clean install and did not run the tool PupUpgrade.exe. When I did this way I could not add any triggers.
When I read the reference manual it says that you can only add "source documents" and also triggers if you have the add-on license for Publisher. So I think that you can not add triggers if you don't have the add-on license for publisher but in earlier version you could do that. In version 9 Qliktech has changend so the product Publisher Standard has been discontinued. I read about it in the release notes.
I will open a supportcase for this because we also need triggers but we don't have the license for publisher.