Updating Sheets

edited 12/09/19 in Smartsheet Basics

Hi everyone.  i have a sheet where all entries are made via a form.  all of the users with access to the sheet are "Editors, can/can not share".  Today they attempted to add or change data to a line and save.  when they went back into the sheet, the changes were not made.  Any idea what is going on?  I am the sheet owner and can make the changes, but it is odd they are having this issue.