If you have the engineer code then yes it's easy to program out the troublesome zone; but unfortunately we can't give out engineer manuals here.
If you struggle to find one elsewhere (you won't) then linking it out with a wire would work.
However, as you say whilst it's highly likely the loose wire was the cause, it's not a definite just yet.
If you can get Engineer access, what would be better would be putting the zone on 'soak' test whilst away.
If it triggers, you won't get an alarm, but it will let you know when you unset. In that way a week or sos holiday
would be an ideal time to soak test.