How change in usage property (attribute,identifier,fact) of query item in FM effects reports in report studio?

for eg. EmployeeCode is identifier what happens when it declared as fact?

In reportnet Attribute Call as A Queryitem

In reportnet identifier Call as A Condition

In reportnet Fact Call as A Measure or NumericValue.

Whenever any changes are done in FM level , re-publish  the package , so that when using the report in the report studio , it will always takes only the latest version of the package and runs the report. In this case, it will reflect the change in query item property and hence gives the updated output data.
correct me if I am wrong .
Thanks