hmm must be a different bug for you (doesnt suprise me) as when i buy something (like 15% move speed) not only is it gone when i start the next game but im broke in favor points as well and can again only afford the first 2 things...
so nice of SD/GPG to let us know they are aware of this bug and are working to fix it, you know not like EA and ignoring it until someone starts a CAL (class action lawsuit) before they fix it (and then claim it was easy making them look even more like arseholes)