We are moving into extensions and trying to use the Extension Letter. (Settings => Options => Items to Print => Extension Only => Extension Letter). 

This appears to utilize the sections from the Settings => Client Letter from Global Heading, Filing Instructions and Global Closing.  I expected that for the Extension Letter that this would use EF Heading, EF Extension and EF Closing. 

I have a ticket open with support but after an hour they agreed to escalate this.  I was hoping someone might have some practical experience on the matter.