Campaign not sending

I realize that if we import the list of contact first before building and publishing a campaign, the campaign will not sent emails out to these contacts. Due to some reason, we have to stick to this sequence: import the list > duplicate a campaign > change the lead source to the list.



Is there a way to fix this issue so that whenever we duplicate a campaign, assign it to an existing lead list and it will works automatically?






I realize that if we import the list of contact first before building and publishing a campaign, the campaign will not sent emails out to these contacts. Due to some reason, we have to stick to this sequence: import the list > duplicate a campaign > change the lead source to the list.

Is there a way to fix this issue so that whenever we duplicate a campaign, assign it to an existing lead list and it will works automatically?