I have a fairly large excel file that I use daily to run a report. Every time I save the file, the style of the cells change to dates. It is the same cells each time. All I do with the file is refresh the data with two third-party add-ins. I have already tried creating a copy of the file. The original file was even showing strange styles on the ribbon, such as "X-Men". The original file would change the cells to Euros when I saved. After I copied the file, the styles on the ribbon were normal and the cells that used to change to Euros in the original file, now change to dates. I have tried many different suggestions online and nothing seems to work.
