I am helping somebody after a computer upgrade. This means I don't know much about the history of these files. Here is what I know: Importing old XLW files results in
- a warning message when opening it in Office 2010 ("The file you are trying to open, 'test.sheet.xlw', is in a different format than specified by the file extension. Verify that the file is not corrupted and is from a trusted source before opening the file. Do you want to open the file now? Yes|No|Help"). After clicking "Yes", the file does open without any further warning or error.
- Date fields in the file are not shown correctly. The attached sample shows e.g. "0-Jan-00", and when I highlight the cell, I see "=11/21/2011" as the data entered, but I cannot remove the "=" to make it a valid date.
- When I try to enter a new date (e.g. 1/1/2012), a '=' is prepended to my date again, and the cell displays again a corrupt date.
- When I open the file in Office 2011 on a Mac or LibreOffice, I can remove the leading '=' and the date gets displayed correctly.
Is there a way to correctly open those files? Is there a method to convert them to current version files? Are there potentially more problems than just the dates to expect?
I am attaching a file that had all it's data removed with the exception of three date fields to show the problem. For EE to accept the file, I had to add a ".xls" to the filename. To work with the original file, remove the .xls extension, so that the filename is test-sheet.xlw again. From what I can tell, it does not seem to make a difference in the behavior - besides the warning message is gone.