I'm having some problems getting my AI installer to recognise that a previous installer for our application is installed

1. Firefox Old Version
2. Frostwire Old Version
3. Yahoo Messenger Old Version 7.5

Application, Version, General Availability, End of Standard Lifecycle, End of Limited Lifecycle, Lifecycle as of Today, Upgrade Availability. InstallShield 2016, 23, 2016-08, 2019-08-23, 2020-08-23, Standard Life Cycle, Not Applicable. InstallShield 2015, 22, 2015-06, 2018-06-10, 2019-06-10, Standard Life Cycle, Available.

previous version of the installer was created in the installshield 2000 professional and im trying to move it to Advanced Installer 8.9

1. Tutorial to uninstall old version and then install new version in single installation Hi. InstallShield will inject the current Product Version here.
2. Version History and Editions. The Features > By Version section of this page has information about the last several InstallShield versions.

I tried creating an update by choosing the 'installed on this machine' but the old application wasnt listed there (it was listed in windows add/remove programs)

Firefox Old Version

i've added the GUID from installshield version to upgrades page in advanced installer, but on running the new installer it doesnt detect that the old one is there at all.
Is there any way to get AI to uninstall the old version of the installshield 2000 installer?

Frostwire Old Version

Thanks,

Yahoo Messenger Old Version 7.5

Fergus.