I have a large excel file that I have been using for 20 + years. Prior to 365, a few of my older versions froze and I had to start over using a backup file. Just want to avoid this now. the current size is only 3.6 MB with 24 tabs.
For backward compatibility with earlier versions of Excel, such as Excel 97-2003, you can use one of two ways to exchange workbooks between the different versions.
