Rang Garuda today to confirm booking and because I had an asterisk with 'contact airline to confirm baggage allowance' and had read here on an earlier post re weight, I asked them and they wanted to know when the ticket was issued I told her the 29th July, she told me that if it had of been issued from the 1st August I would have been allowed 30kg. So if any one else is wondering, check your ticket you may be able to carry the extra.