A warning: If you're planning to buy the Digital Version, don't, unless you just can't get the physical version. The digital version offers no benefits and is the same price. In addition, if something happens to your 3DS you lose every game you own digitally because of Nintendo's retarded system of tying digital purchases to the console they were purchased on.
If you already did buy a digital version, a huge warning: Do not attempt to make backups. There is a variable on the DS that is checked against the save. If you make a new save the variable is updated. This means all backup saves are corrupted the instant you create a new save. That's right: The DRM intentionally fails to load backup saves.