Prototype + Scriptaculous: Migration Questions

We are using Prototype 1.5.1.1 along with Scriptaculous version 1.7.1.

Tried upgrading to Prototype 1.6 branch (along with 1.8 branch of Scriptaculous), but seems some things must have changed - more than a few things do not work when we point our files to include the new versions (firebug开发者_如何学Python is throwing all kinds of exceptions).

I don't mind fixing the items, but am wondering if there is a migration page or some other documentation that explains what has been removed/changed/depreciated/etc so we can isolate and update the proper code.

There's even an elaborate update helper.