If you open the .csv file it will appear in its own window. You could
then open your template. In the .csv file window, highlight all the
cells (CTRL-A) and click <copy then click over to your template
window, ensure that your cursor is in cell A1 and Edit | Paste Special
| Values (check), OK and <Esc - by using paste special, the formats in
your template will remain. Don't forget to use File | Save As to save
the template with a different name.

An alternative is to <copy all the cells in the template, click over
to the .csv file window, select A1 then Edit | Paste Special | Formats
(check) then OK and <Esc - this approach will paste the formats over
the data you have just imported (you could use the format painter, as
well).

Hope this helps.

Pete