Excel Office 365/ Excel Linked workbooks on network drive.

[dcovert]

I have 2 workbooks that I am linking cells from one to the other. The cells include dates, characters, and numbers. Scenario: Everything in both workbooks looked perfect, links were accurate from one to the other. Then something happened and my dates are all wrong in the linked to workbook. My coworker and I work on these files together and my question is - can office 365 be causing this "hiccup" my coworker uses the program excel and I have to use the web version. We have both files saved on our company network and the file locations have not changed. It seems like every time I make changes and save the file the dates get changed, and that is not what I am changing. How can this happen? Any assistance is GREATLY appreciated. Thank you, Denise