Ok, thank you! Still, no matter what event attribution is, the result seems to be misleading, in terms of how the segment is defined. 

Thanks Brian for reply. If I swap the metric selected before for pageview, the segment works fine. The metric I want to use is success event tracking number of submitted forms on particular page. Still have no idea, why segment doesn't work in case I want to use it with this metric:(

that makes sense. Next time we'll apply target on mbox level. Thank you!

Brian thank you very much for your answer. Could you please be more specific on this: "Because visitors are qualifying for that first experience (because the targeting is there), is why you are getting so much traffic for Experience A. " From my point of view, all experiences are equal because all e...

Thats right, upload successful after fix, thank you!

Thanks for reply but that is not issue. The got the same error when I tried to upload the same file with other date range:        2015/02/01 – 2015/02/16(see the file attached)