There is not a way to copy Local Companies over to a new TeamRaiser event. You may want to consider using Regional Companies instead.  You can associate a Regional Company with multiple events of the same event type. Typically, Regional Companies are used for nationwide events where the company associates themselves with select states. For example, the Fun Run might have TeamRaiser events in every state, but the Healthy Foods regional team only wants to associate themselves with the South Carolina and Texas event types.

If you would like to enable the Regional Companies site option, please contact support.