HUGSROOT in version.c

Hi, In version.c, HUGSROOT is defined as: #define HUGSROOT ("SOFTWARE\\Haskell\\Hugs\\Winhugs" VERSION_STRING "\\") This means that the settings from one installation of Hugs do not persist when the user installs a new version. This is unfortunate as it means that when people upgrade, they will loose all their preferences such as text editor, along with their hugs options as well. Is there a good reason for this behaviour? Are options between different versions really totally incompatible? Thanks Neil