Question on How and where source data is changed

 Aditonal info on what I did might help. Using Powert BI Desktop I imported (but alaso transfomred) data from the samele file from Microsft, Financial Sample.xlsx .  I then created a report with multiple visualizatiosn, saved and then published. Next I wnet to teh power BI Service, and went to teh Workspace I created for this MS Following Along Training course and it prompted me to get data from the Financial Sample.xlsx which is  in my OneDriovbe loctaion where POwer BI Service can get to it. When I di this I was told the file already had been imporeted so my question is if I try and build a new report that is unrelated to the one I published but which uses the same Financial Sample.xlsx source file will the transformations made the first time be carried over to this report too?  I'm guessing that the transformations are never associated with the xlsx file but I've seen stranger things in Power BI so I don't assume anymore.