[development] module upgrade from 4.6 to 4.7?

Hi, I am new to drupal. I need to upgrade a module from 4.6 to 4.7. It looks like a number of API changes where made. Is there a document that list the functions that were removed and what their replacements are? I looked at the document titled 'Converting 4.6.x modules to 4.7.x' http://drupal.org/node/22218, but it doesn't seem to have a complete list of removed functions. Some of the functions this module used in 4.6 are: form_item, form_button, form_submit,form_weight, etc.. All of these are listed in the 4.6 API documentation, but not in the 4.7 documentation. Is there a way to find out if they were replaced or just dropped? thanks chad