The DnD Basic rules are too different in design to be “converting” or moving characters easily back and forth between scenarios built for other game systems. There too much lost in nerfing a character into an iBase compatible format to officially present a method to trim that into something compatible. There are hard choices on many nuances with any modern gaming system that simply cannot and do not exist in the approach an design iBase is based around. It is not recommended to do this. To experience the iBase version, simply make DnD Basic characters and modify them according to the Incarna iBase standards.