Trying to anticipate the end-user

 Trying to anticipate an end-user's needs. 

Do they want to keep old data or not? 

They want to keep the old file, but do they want to keep all of the old tabs, or can I delete everything other than Template, Cover Page, and the ones being updated?

I could make it so it takes a second argument (delete). If it is not there keep them, and if it is 'delete' then delete them. 

Sure I could just ask them, but where is the fun in that?