Hi,
Since the application is already packed into a setup file, you can try
repackaging it. After the repackage process is complete, you can import the results in Advanced Installer and create a new package.
Please note that the import features in Advanced Installer (the Repackager, the Import MSI feature etc.) are intended to be used to get a starting point for your installation package, not to completely reproduce other installation packages.
The Repackager tool captures only the effects of the installation (the changes made on the system). If the original installation package executes custom code (programs, scripts etc.) then only the effect will be captured (registry entries, files and folders etc.).
Also, after repackaging an installation some adjustments may be necessary in order to obtain a working installation package.
Regards,
Cosmin