I must have got the same email, Ray... the one that says your account will be migrated to Smugmug and you should download all your photos and delete your account if you don't want to do that. And I made an incorrect assumption. The only thing that will happen is a change to the terms of service as per the following quote from the Flickr blog post.
"
I got an email saying I have until May 25, 2018 to opt out of SmugMug’s Terms of Service and then my Flickr account will be governed by them. Explain please?
As part of the acquisition, all Flickr accounts will move to SmugMug’s
Terms of Service and
Privacy Policy. You have until
May 25, 2018 to either either accept their Terms or opt out. If you do nothing in that time, your account will simply transition from the current Yahoo Terms of Service to SmugMug’s Terms and Privacy Policy. If you don’t want to make this change, you can delete your Flickr account through
your Account Settings. If you want to preserve a copy of your photos, be sure to download them from
your Camera Roll first!"
Also, with some relief, I also read
"
Do I still have to log in to Flickr with my Yahoo login?
Yes. During our transition process, you will continue to sign in using your existing login credentials. Over time, Flickr’s sign-in will be separated from Yahoo’s and when that happens, you’ll have the ability to choose how you log in."
*THEN* I can give yahoo the flick.