I am on version 2.6 of Opt In Email. I have imported my registered users and assigned them to an Opt In list. However, I have now discovered that I also need to assign them to another list. However, when I try to import them again, it will not add them to the other list.
I either need to find a way of adding my registered users to an additional list, or batch delete them from this list so that I can start again and add them to both lists at the same time.
Any ideas?