try this setup to create a url based destination - same as you would use
for fb. you just need to replace XXXXXXX with your linkedin pixel id
Environment: AllType: URLAuto-fill Destination Mapping: Segment IDData
Export Labels:Serialize: EnabledBase URL:
http://dc.ads.linkedin.com/collect/?pid=XXXXXXX&fmt=gif&noscript=1&data=%ALIAS%Secure
URL:
http://dc.ads.linkedin.com/collect/?pid=XXXXXXX&fmt=gif&noscript=1&data=%ALIAS%Delimiter:
,URL Type: Custom URL