Database Upgrade field changes between versions-any documents?

I am struggling to find any sources, apart from one on SAGE 7.1SP2 which has a great excel file which lists field changes between versions!

All i want to do is know for example pers_emailaddress changed from one version to the next, probably in main entities where clients have created Company/Person and Address/email/telephone etc.

Dispite three days of trying, I cannot found out if this info is available....now getting very frustrated!