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@@ -83,7 +83,11 @@ public class ExcelWriter : IDisposable
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List<Mapping>? mapping = [];
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var lastRow = worksheet.LastRowUsed();
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- if (lastRow == null) append = false;
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+ if (lastRow == null)
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+ {
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+ append = false;
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+ lastRow = worksheet.FirstRow();
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+ }
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var rowIndex = (append, startFrom) switch
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{
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