You may have created two accounts and have many contacts on both. You don’t want to lose any of those connections, so the solution is to simply merge the two accounts.
Note: At this time, LinkedIn cannot transfer profile data like recommendations, work experience, pending invitations, or group memberships.
How:
To transfer your connections, contact LinkedIn with the following information:
The primary email addresses of all accounts to prove you own the account.
Tell LinkedIn which account you want to keep.