problem in Campaign Preview

problem in Campaign Preview

Hi,

Something strange with the preview panel of a cloned campaign, it doesn't display the correct data. In the preview panel, the displayed content is a part of a previous campaign and a part of the new campaign. If I update the campaign content, close the campaign and open it again the content was updated. But If I want to preview the campaign and if I send a test campaign the content is wrong.bIf I create a model from that campaign, the model seems not be right created. I obtain a :-( 

Very Strange! Could you help me please?

Best Regards

Brigitte