EPM & Aastra 6867 can not add more lines

I have an Aastra 6867, I want to add more line appearances for Account 1. When I go into the template and add “Line” to the top soft keys they never show. Would like to know how to accomplish this.

Freepbx 12.0.74
Asterisk 11.15
EPM 12.0.0.71
Phone Firmware 4.0.0.1096

OK, I resolved this issue with a little help from Mitel Support.
Here is how I resolved it for anyone else that may encounter the same issue.

I edited the basefile for Sip Line’s 3 & 4 for the Aastra template I was working with to the following

sip line3 auth name: "line1Ext"
sip line3 password: "line1Pass"
sip line3 user name: "line1Ext"
sip line3 display name: "line1Ext"
sip line3 screen name: "line1Name"
sip line3 proxy ip: "line1Dest"
sip line3 proxy port: "line1ServerPort"
sip line3 registrar ip: "line1Dest"
sip line3 registrar port: "line1ServerPort"
sip line4 auth name: "line1Ext"
sip line4 password: "line1Pass"
sip line4 user name: "line1Ext"
sip line4 display name: "line1Ext"
sip line4 screen name: "line1Name"
sip line4 proxy ip: "line1Dest"
sip line4 proxy port: "line1ServerPort"
sip line4 registrar ip: "line1Dest"
sip line4 registrar port: “line1ServerPort

I then used the “line1Ext” variable for the Display on the phone config.
This procedure could be used for the other Sip Line# sections in the basefile if you need more then 2 additional line appearances.
When assignling the lines in the template use “Account3” “Account4” etc…