I've had a quick look at this, I _think_ the attached is all that is required.
regards Vince
Index: tzsetup/debian/common.templates.in =================================================================== --- tzsetup/debian/common.templates.in (revision 61048) +++ tzsetup/debian/common.templates.in (working copy) @@ -12,8 +12,8 @@ Template: tzsetup/country/AU Type: select Default: Australia/Sydney -Choices-C: Australia/Lord_Howe, Australia/Hobart, Australia/Melbourne, Australia/Sydney, Australia/Broken_Hill, Australia/Brisbane, Australia/Lindeman, Australia/Adelaide, Australia/Darwin, Australia/Perth -__Choices: Lord Howe Island, Hobart, Melbourne, Sydney, Broken Hill, Brisbane, Lindeman, Adelaide, Darwin, Perth +Choices-C: Australia/Lord_Howe, Australia/Hobart, Australia/Melbourne, Australia/Sydney, Australia/Broken_Hill, Australia/Brisbane, Australia/Lindeman, Australia/Adelaide, Australia/Darwin, Australia/Perth, Australia/Canberra, Australia/Eucla, Australia/Currie, Australia/Yancowinna +__Choices: Lord Howe Island, Hobart, Melbourne, Sydney, Broken Hill, Brisbane, Lindeman, Adelaide, Darwin, Perth, Canberra, Eucla, Currie, Yancowinna _Description: Select a city in your time zone: Template: tzsetup/country/BR