Just click on the monetize tab and then click on the link switch adsense account and you can use your existing adsense account with your current blog that you wish to. just enter your email address and also the zip code or the last five number of your phone and thats it you are done.
hi i cant able to switch adsense account to old one in blogger. i am creating a new blog
and i click the switch adsense account and its shows the email and pin (postal code) or
last five digit of the phone and i enter my old email and also enter the zip code of mine
and it works but the things that i want to say i does not show my previous earnings, but
when i log into adsense dashboard then i see that i have earnings but in blogger it says No
data available with a question mark just the help of the blogger. now i does not know how
to do in this position and what i can do. a solution of this i can show google ads using
the widget of blogger and add the google adsense code to it and show it blogger of my old
adsense account that i dont want to create new one adsense account as i have old account
but i want to switch to old adsense account but i does not work or i am fail to fill the
form of the switch account page. someone tells me that you can contact with google to do
this but i think that i can add code with the html or javascript block in my blog will help
me better and this will be the best way to do.