How Server-side Adobe Target tracks visitor information in Adobe Target Edge servers?

[Umamaheswari_Yakkala]

Here is situation ..

we are using adobe target client side calls for few mboxes and server side calls for few mboxes.

In both the cases we are using one 3rd party Id as Unique Id but attribute names are different like

in client calls we are using "visitor ID" : 1234 

in server side calls             "thirdPartyId":1234

In both the cases ID is same..but names are different. 

Trying to get sence how Adobe Target consider or save this Visitor infor in Edge servers?

Please help me if any one is having idea. 

Thanks In Advance.