[Plugin: Jetpack] Merging the stats of two WP installations

Hi everybody,

recently I have merged our sub page (cluecast.cluewriting.de) into the main WP install under cluewriting.de including all posts, pages, comments and the media library. The sub page is still online, however visitors are being referred via a .htaccess script tho the desired content on the main page.
Now, something funny happened: Suddenly a part of the stats of cluewriting.de appears in the sub pages wp user panel. However, I would like to move (or rather merge) the stats from cluecast.cluewriting.de before the migration (in)to the main page, so everything is in one place and I can deactivate Jetpack as well as many other parts of the obsolete installation.
Any help would be gladly appreciated – thank you in advance! 🙂

Yours,
Sarah

Edited: Typo