Hi all,

We have a mostly-successful custom Opportunity button called "Convert to Contract" installed that passes Opportunity field data to the "New Contact" page for assisted creation of related new Contact records.

This mostly works great, except if the source Opportunity record has multiple values in the multi-picklist field "Opportunity.Revenue_Line_Items__c", the values are NOT passed at all to the Contract field "Contract.Revenue_Line_Items__c"

Our existing button URL is:
/800/e?retURL=%2F800%2Fo&00N70000002TSz9={!Opportunity.Amount}&00N70000002TRfD={!Opportunity.Revenue_Line_Items__c}&CF00N70000002VZrb={!Opportunity.Name}&ctrc7={!Opportunity.Account}&CF00N70000002GKcp={!Opportunity.OwnerFullName}&RecordType={!Opportunity.Contract_Record_Type__c}&00N70000002Heje={!Opportunity.Region__c}&00N70000002TYrf={!Opportunity.DRW__c}&00N70000002TYrp={!Opportunity.Incubator_Project__c}&CF00N70000002GRtk={!Opportunity.Campaign}&00N70000002UUaZ={!Opportunity.Funder_Ref__c}&00N70000002UUlN={!Opportunity.Total_Number_of_Payments_Expected__c}&00N70000002TSzY={!Opportunity.Expected_or_Funded_Amount__c}

I understand that this help topic below provides a general solution to this problem, but I don't understand how to merge this solution with our existing button URL. What should the final button URL or syntax be to make this work, and should the button type be "on-click javascript" or "URL"?

http://help.salesforce.com/apex/HTViewSolution?id=000004172&language=en_US