e-list  ??

Please explain, like is that for a website?

Or are you referring to an email list in webmail or an email application?

Or possibly is it related to a Firefox extension (addon) which you didn't insert in your "new question thread" when prompted to do so?

The 'new ' version screws up your group listings and cant access individual mail contacts to set to group lists

I am having the same problem. Can't change/add/delete names from group lists.

You posted in the Firefox support fora queue. Firefox doesn't do email, it's strictly a web browser.

If you are using Firefox to access your mail, you are using "web-mail" such as Yahoo!Mail or Gmail. You should seek support from your "web mail" service provider or a forum for that service.

https://support.mozilla.org/en-US/kb/problems-with-email-how-to-find-help