You will need the installation manual during this process, although it does not cover changing host operating system. When upgrading Windows, follow these instructions:
1. Use ABS Data Backup to make a removable backup of your data.
2. Upgrade Windows making sure it is still connected to your network.
3. After Windows is operating properly, install ABS per the installation instructions (especially step 14).
→ 3a. Do a Host installation.
→ 3b. Do not attempt to open ABS yet.
4. Using ABS Data Restore, restore the data from the backup made in step 1. You may now open ABS.
Note: if the new host has a different Computer Name, you will need to reconfigure the path for each workstation.