Hi, I have BK version 5.1 with over 300 names and 108 marriages. Can I just install this a new version of Windows without losing my data?
Of course, you can install a new version without loss of your data. You just need to use the Export/Save As option so that you can backup the database. Make sure you save the file to a location different from the place where the operating system resides. After this operation, upgrade your operating system and make sure the application is compatible with the version of the OS you're planning to install.