Steps to reproduce:

1. Import template (confsync_tmpl.xml) only by using 'create new' rules.
2. Import hosts (confsync_hosts.xml) only by using 'create new' rules.
3. Import updated hosts (confsync_hosts_updated.xml) only by using 'update existing' rules.

Result:
Even if 'update existing' was selected for triggers, they are not being updated.
No failures of API call are observed, result is always successfull. It seems like no Update statements are executed for triggers (checked via mysql general log, logfile for importing updated configuration is also in attachment).
Expected:
Triggers are updated (expressions, priorities).