When upgrading to Isah 4.6, you need to manually delete all older versions of the Isah software before you install Isah 4.6. To delete any older Isah software, open Control Panel, and choose Uninstall a program. Select the Isah applications, and then click Uninstall. Follow the instructions on the screen.
From Isah version 4.6, every update will include all new versions of all new Isah products. The new installers for the Isah 4.6 products automatically delete any older versions of the software before the new version is installed. This new updating and upgrading method will be used as soon as you have installed version 4.6 of the Isah software.