When I open a Word 2003 document the table formatting changes because a
paragraph style has been applied as a table style. This paragraph style has
not been used to format the text within the table cells, another style is
used for this. The paragraph style has not been used anywhere in the document
although it is one of the styles available within the document. The table is
formatted with Table Grid.

I can see the spurious style in Reveal Formatting. I can remove the style
and revert back to the correct table style by pressing Ctrl + Q (Reset Para).

I have tried removing the spurious paragraph style only for Word to pick up
another style. This is entirely random.

Could someone tell me why this could be happening.

Thanks
HelenaB