Update the Create a staging environment for upgrading Confluence article to include Triggers

Add the below step ("2.3") to the existing list:

2. Replicate your database

To replicate your database:

1. Back up your production database. Refer to the documentation for your database for more info on the best way to do this. 
2. Install your database on the staging server and restore the backup.

3. Recreate any DB Trigger that may still reference the original DB name. For SQLServer, for example, the following query may help identifying them:

SELECT table_name = so.name
,trigger_name = st.name
,trigger_text = sc.text
,create_date = st.create_date
FROM sys.triggers st
JOIN sysobjects so ON st.parent_id = so.id
JOIN syscomments sc ON sc.id = st.[object_id];