Q: How did I end up with two iCloud passwords for the same account?

How did I end up with two iCloud passwords for the same account?


For security reasons, I only use iCloud for Contacts and "Find my iPhone".


Several months ago Apple forced me to change my iCloud password.  So I did this.   Over the last several months I have successfully used the new password 10 or 12 times when requested without issue.


However, I got a notification of a software update for my Apple watch. I did the update without a problem. However, after completing the update my iPhone asked me to log into my iCloud account. When I did this it rejected my password. I made 4 attempts typing very slowly and carefully to make sure I did it right.


Then, operating under a hunch I decided to enter my old iCloud password. It worked?  I'm confused about this, any ideas would be appreciated.