Building a newer .ISM file with an older version of InstallShield
For our software we have been building our install using a .ism file built from command line. Normally, we have been using InstallShield 2011(SchemaVersion = 771) to do this. Recently the .ism file has been upgraded to a 2016 version of InstallShield (SchemaVersion = 777). The main install machine is still using the 2011 version, and appears to be building the installer correctly. Is building the newer .ISM file valid with the older version of InstallShield 2011.