Make sure you have the aspect ratio locked. You can do this in Format
Object (check both "lock aspect ratio" in the Size tab, and "Relative
to original picture size").
If you have dynamically linked, it's not necessary to call Excel from
within Word, but open the source (xls) file. Then make the changes,
and the Word document shd reflect them without changing the size of the
table.
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Henk57