Started a webpage that now contains a lot of analytic data. Now that I have the client GA Tracking ID I would like to move the data I already have to that
Might be possible to do this as i was curious and found a few forum posts mentioning it:
Log into GA. Goto the Account List. Find your web property, you can't click the 'property' itself but a profile under it... Then click on Admin on top-right side. Go 'Up' a Level. For example the breadcrumb says: 'Account list' › 'FOO (www.foo.com)' › 'FOO (www.foo.com) - (Default Profile)' and now the breadcrumb should say when you click 2nd breadcrumb link: 'Account list' › 'FOO (www.foo.com)'
Now you have an option to add other users to this whole web property by going to the Users tab. Add an Administrator user to this specific property. You can setup this user for them on gmail that they can change the password later after you set it up (or use their Google Account email they provide and maybe walk through with them to make sure they do it correctly).
Then login as that user, and delete the old user. Then that should 'transfer' to a new account.