more... than ...

[codenamecharlie]

sometimes I am not sure if my way of using "more .... than ...." is correct.

e.g. is the following sentence correct?

"Attached is the updated document which contains much more accurate information
than the previous version which I gave you last month."

or maybe I should say "...which contains much more accurate info. than
the previous version does." (appending a word "does" ).

thanks!

[Horsa]

Both are fine the second is a little less formal. You need a comma after 'version' in the first example.

[Anglika]

You seem to be using it perfectly well. Your first sentence is fine and comprehensible.