I recently discovered that by upgrading to Basecamp software version 4.7.5 you lose the ability to open the page showing route properties. This page is necessary for planing individual leg lengths and layover times together with other vital details normally used in planning for rallies. Garmin are looking into it at the moment, but I recommend that you stay with 4.7.4. if you want to keep all the features.
Regards
Winglider
Regards
Winglider