Campaign paused, text edited, how to continue sending?

The campaign is in Draft mode now and the only option on the Finalize tab seems to be “Resend” but we dont want to send again to the whole set of subscribers but rather to continue sending to the remaining subscribers that havent gotten an email yet.
Is it safe to click on Resend or is there another option to just “Resume”?

if you ‘resend’, it will only send to the users that have not been sent to
for each campaign, phpList will only send one copy of the email to each subscriber. So… if you add a list to a campaign at a later date, and ‘send’, it will only send to the new subscribers.