Publishing Segment from Adobe Analytics to Audience Manager

Hey guys, can someone tell me connection between analytics and the audience manager by publishing/sharing segments from analytics to the audience manager?

The lookback period in analytics by publishing segments is maximum 120 days. I have shared this segment from Analytics to the Audience Manager. Now i can see this segment in the audience manager. But in the audience manager i can also see, the experation is automatically set for 16 days, but why? I want to collect as many users as possible, this is why i set the lookback period to 120 in Adobe Analytics, so i thought this segment includes user from the last 120 days. but how should this work, if it expires after 16 days in the audience manager?

Thank you 🙂 

Segment in Adobe Analytics:

The Trait of this published Segment in the Audience Manager: