I wanted to create a design for the A/B Testing but I want to copy one of the already made Email (previously it was developed by me) in some campaign which is specifically not for A/B Testing.
Eg. I made an Email whose label is abc(id:emailabc) under some campaign named xyz(id:campaignxyz)
Now I want to create an A/B test Email and I want to pick the content of abc Email which I defined already.
Then How I am able to do this thing in Adobe Campaign Standard.
You can copy the html code of the email delivery already created using email designer and create A/B test email using the copied html code.
FYI - Documentation on A/B testing (Designing an A/B test email)