Question about obtaining multiple Guardian vessel segments

So im out at Synuefe EU-Q C21-15 (A 1) And i figured I would just try to get all of the vessel blueprints for the guardian fighters at once....first one worked like a charm. But after i dropped the second Ancient Key......the core gobbled it up, but i didnt get another blueprint when i scanned the data core. So my question is.....Do I HAVE to log out and back in after each key? Orrrrrr what
 
Or leave the site (might have to leave the system to reset the instance?) and go back / go to a different site. But most just relog.
 
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