I have a problem with the data in my power bi report. For my master thesis I have to build a KPI dashboard with cycle time, performance and capacity which is working totally fine. So I have a data set wich contains the logistic information from the last 7 days and it is refresehed three times a day automatically by overwriting the previous excel file. My question is: can i somehow keep the old data in power bi, even though its gone from the file? I want to build an overview for all the KPIs and also do a little forecast but thats not possible if the data is gone.