We are facing a issue, where we want to be able to merge records for 2 or more subscriber keys. We know that this is not a standard functionality, so how should we best approach this?
The key element is to have the campaign history on the the final merged subscriber key. So any campaigns that subscriber 2 and 3 has been in should be visible on subscriber 1.
I have been trying to look for solution to handle this, but I can't seem to find any good ways to approach it. Does anybody have any ideas?