Proper Backtracking

A common problem in DyNo happens whenever you click/press Left and return to the previous state.
The way it achieves this is by recreating every step before the last one. Which is a problem since DyNo remembers the Characters/Scenarios that were placed earlier so they kept their expression/image.

The solution was to simply clear any memory, thus making backtracking even more expensive (it has to re-create every step up until the desired one anyway). It's a forceful but functional strategy.