So there was a verse about stoning adulterers to death but it was abrogated so adulterers are no longer to be stoned to death?<quoted text>
Wow man, you found out about this Hadith of Umar Bin Khattab , there is a complicated methox of explaining verses called AL-NASIKH WA AL-MANSUKH Science, if you really want to understand Al Nasikh wa Al Mansukh you gotta ask a specialized scholar, Al NASIKH WA AL-MANSUKH is mainly about putting a verse instead of a Hadith or a A Hadith instead of A Verse.
The Quran on Naskh The principle of naskh (abrogation) is referred to in the Quran itself and is not a later historical development:
2:106 "None of Our revelations do We abrogate or cause it to be forgotten, but We substitute something better or similar: knowest thou that God has power over all things? "
Why the change of mind? Is your God indecisive?
Abrogation only makes any sense if a verse is revealed to deal with a temporary problem that's then resolved. Adultery's still here.
This is why the hadith is indicating it's a lost verse not a abrogated verse.