Just a thought.

[off_kilter_one]

The point would be this, older versions of a program are weaker but still exist within a system, which hence in the digital world mean they are stronger or more resiliant than most if they survive. As such they should recieve upgrades but maybe through some quirk they become a subfolder in a version, like, for example Tsukaimon and Patamon, different name, same body type but different class of creature all together.

If it makes sense I am saying just a version of 'Renamon' that went along it's own little path.