iPhoto won't save edited pic

[Bob Baron]

Hi group
I'm probably missing something but when I try to edit a pic it won't 
save the edited pic.  Reverts to original when either editing 
original or duplicate.  I know it should save automatically as you 
work but I haven't been able to master this process.
-- 
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Bob

"Ask a question and you're a fool for three minutes; do not ask a
question and you're a fool for the rest of your life." - Chinese proverb