How to manage multiple leads from same contact for multiple campaign ?

hello,

I have performed Eloqua to Sales integration in which I am sending leads, contact, and campaign data from Eloqua to sales in which multiple leads are created from one contact with a different campaign so how can I manage and keep the records of each lead if I created lead for the second time then we will lose the records of the first lead because the contact will get updated with new lead records

can anyone help me to find a solution or any logic by using program or campaign like

Thanks,

Rohit