Yes, but one-way . Newer software will convert the file to a new format. Once converted, you cannot open it again in v6.2. Always backup your original .PBA file before opening it in a newer version.
: The Programming and Installation Guide provides step-by-step setup instructions for version 6. Key Features of Version 6.2 Panel 800 Version 6 Panel Builder - ABB panel builder 800 version 62 download link