Section 62(3) of the SCMA only makes reference to a Special Resolution, and if the Minutes of the Meeting include a statement that the Resolution about the transformers will “remain in force until otherwise resolved by proprietors at a general meeting”, then I believe that’s sufficient. If those words or some similar aren’t included, and the matter wasn’t again specially resolved at each AGM since 2006, then in my opinion the status quo applies and the O/C is responsible for the transformers etc.
If you opt for the 240vac adaptor, then you’ll never need a transformer ever again.