Separating two doors into two zones (Ademco)

We just moved and have an Ademco Vista 20SE (

Zone 6 has two doors connected to it. I would like to separate them into Zone 6 and Zone 7 (which doesn’t appear to be taken currently) so that I can bypass one and still set alarm without disabling both. It appears that two contact wires have their green/white wires connected and then green from one connected to one terminal and white from other connected to second terminal. Is it as simple as breaking the connection between two contacts and just wiring one up to the Zone 6 terminals and the other to Zone 7 terminals? Is it okay to do all of this while it has power? I assume I will have to program in Zone 7 somehow after adding?

Thank you!

Edit: Fixed model number

submitted by /u/jlwlynn
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