The booklet says that if you want it to go ahead you should vote for it. However if you don't vote or vote against it your shares will still be sold if the proposal goes ahead.
The only thing to do is check that the company (not your broker) have your bank details (plan A is to pay that) or your up to date address (plan B is a check in the mail). If they have neither then they had a fancy term for how they would treat your money (unclaimed or lost or something like that). Basically its paid out more like a dividend would be rather than like a sale would be.
ACX Price at posting:
$7.73 Sentiment: Hold Disclosure: Held