I have just made a blunder when copying a campaign and believe it could be one that others have made and new users will make.
After clicking on copy campaign, I entered the name of the group, which is my test group; however, I failed to remove the inclusion group(s) or exclusion group(s).
Our process is simple, all new campaigns MUST be sent to a TEST group. Once the user is satisfied with the results of the test, we then add the target group as an inclusion group and add the test group as an exclusion group.
Because I failed to remove the test group that was an exclusion (thereby eliminating any tests to go out) and failed to remove the inclusion group that was part of the original campaign, group from the prior campaign received all 4 eMails since the time for all was "Instant Release" and none were sent to the test group.
Could consideration be given to prompting the user if they want to keep any inclusion or exclusion list before the new copy is created. Just a reminder when the create button is clicked to tell the user there are inclusion and/or exclusion lists. Do you want to continue?