In general, a strata committee must keep full and accurate minutes of its meetings. The minutes must include details of all resolutions passed, including those considered without holding a meeting.
What does “full and Accurate minutes” really mean? This is a ‘grey’ area. Legal opinion varies on this issue.
A NSW opinion regarding the recording of debate and discussions in the Minutes of a Committee Meeting is: Strictly speaking, these need not be recorded, as they are not resolutions.
See: https://www.lookupstrata.com.au/body-corporate-meeting-minutes/
In contrast, a QLD legal opinion from Hynes Lawyers stated:
At a minimum, there should be a record that discussion about the issue occurred. Subject to what the issue of concern it is may be appropriate to leave the decision out of the minutes, but I think the chances of that are remote.
What the committee discusses, and decides, should be a matter of community record – even if the subject is controversial. Ultimately, proper decisions on matters of substance are reserved for owners in general meeting anyway.
https://www.lookupstrata.com.au/qld-body-corporate-committee-meeting-minutes/
I note that your issue relates to the ACT. I do not know whether the ACT situation is more akin to NSW or to QLD.