Changing Apple ID
If I change my apple ID to another email address will I not loose my files/data saved on my Macbook?
Question marked as
You won't because the ID should change on the computer too. The ID isn't really "on" any single device, it is universal between all devices using that account.
However, "After you change your Apple ID email address or password, you might need to update your sign-in information with any Apple services you're using" Click on this link to read "What to do after [or before] you change your Apple ID email address or password" --> https://support.apple.com/HT204071