OpenXML/ODF Translator Add-ins for Office
The ODF-Converters (cooresponding to Word translator, Excel translator and PowerPoint translator) translate OpenXML documents, spreadsheets and presentations (.DOCX, .XLSX and .PPTX) to Open Document Formats - ODF 1.1 formats (.ODF, .ODS and .ODP respectively) and conversely, for Open XML processing applications. You will find below the links for the list of unsupported features which may be due to standard compatibility issues, or due to the translator itself (see rendering issues as discussed in the blog)...
ODF add-in for Word
Query on the category "Document" in the Source Forge to view the list of Word Known Issues.
ODF add-in for Excel
Query on the category "Spreadsheet" in the Source Forge to view the list of Excel Known Issues.
ODF add-in for PowerPoint
Query on the category "Presentation" in the Source Forge to view the list of PowerPoint Known Issues.