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POI and issues reading xlsx files

Alex Philippi
Posts: 13
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i created a workbook out of a given Excel 2007 file (the file was created with Excel 2010; but this shouldnt matter).

The given file looks like this:

I have to add some informations to this excel file, but if I run this test case, the "Spalte 1 - X" are removed ( I know the asserts are ugly but its only to show my issue):

I got no issues when I run the test with an Excel 2003 file. Does anybody know why these columns were removed?

The written workbook looks like this:

I hope anyone could give me a hint why the written workbook doesnt look like the original excel 2007 document.


I decided to use the POI mailing list for this question -> therefore resolved here
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