How to move contacts from Yahoo to iCloud?

I found the answer, I thought I would report back in case others trip over this thread. My answers were found with DuckDuckGo's Artificial Intelligence.

Very simplified steps,

1) Log into your Yahoo account and find your Contacts, there is an option to export your Contacts as a csv file. Export the file and remember where it is. (Mac Download folder, probably.)

2) Go to the problem iPhone, I have two iPhones, the problem was only on one of them. Go to Settings, Contacts and turn off synchronization with Yahoo. This will DELETE your Yahoo contacts from the iPhone, but will have no effect on the Contacts that still exist with Yahoo, they just won't be synchronized anymore. (This will also delete the Yahoo "List" on the iPhone Contacts, which was my goal all along. )

3) Import the csv file into All iCloud Contacts, ( I did this on my Mac Studio. ) Now, all of the Contacts that I have are in one place only, and that is iCloud.

Note: The procedure that I found mentioned that not all Contacts might be imported from the csv file, and you may have to copy some manually. So far, I have not encountered that glitch.

For people that are more clever with technology, it looks like you can synchronize different email services in Apple Contacts. I don't want that level of sophistication. It's extremely rare for me to use Yahoo. It's a throwaway email address when someone insists on having one, when they don't actually need it.

I don't really use Yahoo. I don't want sync ANY of my contacts with Yahoo. I'm just trying to get the contacts in that list into "All iCloud". Then delete that list entirely. View Yahoo has just a name, nothing else.

It may have been some mistake made a long time ago. I'm not using Yahoo. I don't want any contacts associated with Yahoo. I am just trying to move those contacts from that list to "All iCloud", and then delete the list called Yahoo entirely.

I can see how to export these contacts from Yahoo into iCloud. But I am trying to completely get rid of the Yahoo list on my iPhone. Maybe the only way to do this is through Yahoo. I haven't used any of that in a long time.

The real problem is that even when I copy the contact over to iCloud if I delete it from Yahoo, it deletes it EVERYWHERE.

Yes, I have figured out how to get the contacts into iCloud. The problem is that if I go into the Yahoo list and delete the contact there, it is deleted everywhere including iCloud. This is the great mystery.

Yahoo support is useless. They do not answer emails. No one there knows what the problem is. I do appreciate you trying to help me, but I will definitely be unable to get ANY help from Yahoo. Other Yahoo users state it's an "iPhone Bug".