Users are unable to see a Contract in the Contract Lookup field when creating a new contract Offline. The record displays correctly Online in the lookup when creating them Online.
For this functionality to work Offline, the Record Type names for the Contract and the Contract Partner need to match.
Be sure to use matching Record Type names when using custom Record Types for the Contract_vod__c and Contract_Partner_vod__c objects.
CRM Help Documentation: Architecture of a Contract