Exception when the comments are imported before the fallback notes.

Wrong color scheme colors leads to wrong cell coloring on export.

InvalidCastException on import when a drawing in a document contains the "ext" tag 

Inserting new rows above rows containing hyperlinks breaks the hyperlinks.

When a worksheet has a function of the type "=Indirect("A1")" and the value in A1 is edited, the result of the function is not updated. This, however, happens only after the file is imported. If the function is created through code or SetValueAsFormula is called after import, the function works as expected.

Workaround:

The XlsxFormatProvider could throw FormatException: 'Input string was not in a correct format.' while parsing a color definition. Suppress such errors so that the document can be imported and use default values for the colors.

When a cell contains a lot of empty lines the last line is not rendered correctly.

Images don't move with cells when a row/column is inserted.

When a file with a format string of the type "\m\:0.#;\m\:0.#;\m\:0.#;\m\:\ @" is imported, argument exception is thrown.

Add support for structured references in tables.

A conditional formatting rule with a custom formula is lost when importing a file generated from Microsoft Excel.

If the column has a text format set and has a mixture of text and numbers, the numbers should be exported as text as well.

SpreadProcessing: feature request to add IEnumerable<T> Interface(LINQ) implementation with CellSelection

KeyNotFoundException: when iterating cells having a disabled 'Normal font' formatting option.

In some cases, horizontal bar chart cannot be loaded correctly. This leads to issue when opening the document with the RadSpreadsheet for WPF control.

Handle import of documents with invalid elements in 'x:fonts'.

Add support for NOW function. NOW returns the serial number of the current date and time. If the cell format was General before the function was entered, Excel changes the cell format so that it matches the date and time format of your regional settings.

A list of the supported functions is available at http://docs.telerik.com/devtools/document-processing/libraries/radspreadprocessing/features/formulas/functions

This function can be implemented as a custom function. Check the following resources for more details on how to achieve that:

- http://docs.telerik.com/devtools/document-processing/libraries/radspreadprocessing/features/formulas/custom-functions
- https://github.com/telerik/xaml-sdk/tree/master/Spreadsheet/CustomFunctions

When a sheet is protected in an asynchronous scenario an exception is thrown: System.ArgumentException: 'An item with the same key has already been added. Key: RIPEMD-160'.

InvalidOperationException is thrown in files where the Comments part is imported after the ThreadedComments part.

Exception "Format string is not in the correct format" is thrown when importing a file with the following format string: "US$"#,##0.0"m";($#,##0.0)

The exception is thrown in the ValidateDateTimeFormatDescriptor method.