Marketing Campaigns in Customer History

[Wolf]

Hello!

I already have multiple marketing campaigns in BCM, all working correctly.

Today I created a new marketing campaign, and now I see that Marketing
Campaigns in ALL customer's history at the very end, section "no date". I
work with the German version, so please excuse my erratic translation of the
correct terms ;-)

What is it doing there? Only one sales chance has that marketing campaing as
asource listed.

How to get it off all the contact histories?

Thanks for helping,
Wolf