need help please - updating existing report

*new PBI user* **extremely basic knowledge**

Hi there - I am trying to update a exisiting pbi report. It contains all old numbers and the new excel file has the updated numbers.

There are a lot of visuals in the exisiting dashboard and I don't want to go through the hassle of creating and implementing them as well. 
I want to know whats the best way to go about this? should I overwrite the old file with the new file using the same name. only concern is i dont want the old query to get deleted because then I wont know what steps were taken to edit the query.

I basically need to have the same visuals just update the raw numbers so that the dashboard can be looked at by others. thank you.