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Backwards Compatibility

> [VB.NET] ... was literally the first time in living memory that when you bought an upgrade to a Microsoft product, your old data (i.e. the code you had written in VB6) could not be imported perfectly and silently.

If you've tried importing data from Microsoft Project version n-2 you'll know this isn't true.  And even for other products, "perfectly" is too optimistic

Thursday, June 17, 2004

Maybe this is the first time the marketing folks haven't tried to cover it up ;-)

Thursday, June 17, 2004

SQL Server 7 is within my living memory. It did import SQL Server 6.5 databases silently but not perfectly.

Just recently I found that Excel could not calculate a spreadsheet that was saved in an earlier version (Excel 3, I think). It opened the file but I had to rewrite some of the formulas.

Greg Jorgensen
Thursday, June 17, 2004

Joel point still stands, you're talking about *major* version updates.

Taking a document from Excel 3 into Excel 95/97/200/2003 is going to be difficult as there are progressively more and more changes.

Joel was specifically saying that if you stay within a version or two, there were minimal (if any) problems.

Friday, June 18, 2004

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