Trio 8800 Hybrid exchange.meeting.parseOption

Trio 8800 5.9.1.10906 in Hybrid Mode

SFB Line 1

The exchange.meeting.parseOption="All" is not saved after importing it.

Orginally the Trio8800 was configured with SFB SIP Zoom Bluejeans and exchange.meeting.parseOption="All" did want to be saved. So I rest th eTrio 8800 to Factory by holding the 4 corners, and I configured only SFB and imported only these

dialplan.1.digitmap.timeOut="8"
dialplan.1.lyncDigitmap.timeOut="10"
reg.1.mergeServerDigitMapLocally="1"
reg.limit="4"
dialplan.digitmap.lineSwitching.enable="1"
exchange.meeting.parseEmailsAsSipUris="1"
exchange.meeting.parseOption="All"

however after exporting the config file, the exchange.meeting.parseOption="All" still not saved on the Trio 8800.

is it something wrong or the paramter is no longer applicable.

Also another question;

in order for the Trio8800 to prase and display JOIN button for Zoom, Blujeans, webex ..etc, do I need to configure the lines for each as well ?