I wish people will stay clear of this newer social media... It already smells really bad in its practice.

This is a good reference on how to write design documents. It's not as easy as it sounds sometimes, and this guide contains good tips.

Remind me how your built your models in the first place? Yeah right...

Friendly reminder that the answer is "no". You don't want to just rewrite everything, it's not just a syntactical translation, it's a long project and at best you tackle critical components.