As both a biologist and a computer systems analyst, information is simple.
As far as Shannon information is concerned, any change is a loss of information, i.e., the message sent is not the message received.
But biological information is not subject to the rules of communication theory. The definition of biological information that I learned some decades ago is this: the number of bits required to represent a genome. Any change in the number of bits required to represent the genome (a novel mutation, + or -), is a change in information.
The requirement for a new function is a boondoggle. It is another case of an unreasonable creationist demanding the biologists use his definition of information by using a definition that no one but creationists use.