What are the best practices when migrating XCOM for Windows for these scenarios:
Release: 11.6, 12.0
XCOM™ Data Transport® for Windows
As general advice, when moving XCOM to new a new machine rather than copying existing XCOM installation files from the old to the new machine XCOM must be installed on the new machine.
That is because an XCOM installation on Windows involves not just placing the files/libraries onto the filesystem but also creating registry settings and environment variables.
XCOM for Windows 12.0 is the latest version so it is strongly advised to upgrade to that version and its latest patch level assuming the Windows version being used is supported for it. For details please see XCOM Distributed Platform Compatibilities and the Windows section.
Instructions for both 11.6 and 12.0 are provided below.
The latest service pack for 11.6 is SP03.
Assuming the Windows version supports XCOM for Windows 12.0
XCOM Data Transport main product page.