A Quick Way to Change References?

I am in the process of developing my own custom reference types, and want to speed up the process by re-using work previously done. Here are my questions.
1. How is it possible to change the reference type of many references simultaneously, rather than the time-consuming task of opening and changing each one of them? For example, changing from Book Section to Journal Article for more than one reference at a time.
2. How is it possible to transfer content from the field "Date Freeform" to "Section" for more than one reference type, provided one is working under View/Current View/By reference type?

For both operation, first

For both operation, first go to "References | Retrieve All".

1. Go to "Edit | Replace". Limit your change to the field "Reference Type".

2. Go to "Tools | Utility | Move or Copy Field...".

Excellent. Wow, that was

Excellent. Wow, that was very good... Thanks