Hello Sue.
It's not clear what is your issue? I can think of 2 questions you might have.
1. Why BPs are added to every target group?
It's easy: because of your first rule in Decision node ("Business partner was contacted as part of campaign element..."). By the way, I can not see any practical sense of it, the only reason for such a rule with all campaign elements attached might be that you're testing something.
2 Why there are zeros near those campaign elements despite the fact there are non-empty target groups inside?
I'd ask in turn: And what do you expect? It works as designed I suppose. These numbers show:
left one - how many partners have been _contacted_ within this campaign element (outbound);
right one - how many partners _responded_ with the reference to this campaign element (inbound).
I'll explain. 5 partners have been _contacted_ in "Sent e-mail" element. Would like to mention that this number is not necessarily equal to the size of target group inside. Marketing permissions, no e-mail address and other reasons can reduce the actual contacted number. 2 partners _responded_ to this element (referring it automatically when processing the survey).
5-2 - we can see it.
Both of two have been passed to "Thank you" campaign element. Which, I suppose, has workflow "Transfer Responder to Channel" with appropriate mail form and "start for every respondent" flag assigned. So they are again _contacted_ using "thank you" email. As a result you can see "2" for "thank you" element.
2-0 - we can again see it.
Other campaign elements I guess have "Add BP to target group" workflow. And when this workflow is triggered for every respondent, the partner is _not_contacted_ in fact. You only collect them into target group. And as a result - zero contacted (as well as zero responded) partners for those campaign elements.
0-0 for all other "Collect.." campaign elements.
Hope this will help to clarify your doubts.
From technical perspective (and sometimes it might be even helpful as well) these numbers are counted using FM CRM_MKTCT_GET_NUM_BP.