Importing older and non-complete data?

Hi there,

I got a raw gui for my site working with using the api to retrieve the piwik data.
As I’d like to get rid of my older and manual hit/visit tracking solution I’d like to import the old data from it directly into the piwik database.
Essentially I got daily counts of views and visits (for some years). Would it work if I just imported these into the archiving tables or would all the other data be required too?

Regards,

thomas