Word document import doesn't import Word tables correctly, but as stated here in the release notes:

http://xaragroup.magix.net/designer-pro/notes/

Note there are some Xara features not supported by Word and vice versa, so there will be documents that cannot convert. However most normal Xara documents and Word document should convert with good fidelity.

Note: The Word import / Export is work-in-progress, and we will continue to improve both. If you have a Word document that doesn’t work, please submit a support ticket...