Hi, Helpful Ones-

I'm trying to create a custom button on the "Child Opportunity" related list on my Opportunity object.  (My data model is such that my users can create a child opportunity from an existing Opportunity.)

I need the button to mimick the functionality of a standard "New" button on a related list (i.e. the return URL should be the Parent Opportunity, and the Parent Opportunity field should be automatically populaed for the user), but I also want to have several other custom fields auto-fill from the Parent Opportunity.  (These need to be editable--otherwise I would just use cross-object formula fields.)

I'm just trying to get the standard functionality to work right now (forgetting the additional custom fields for a moment)... and it's not!  Here's what I have:

/006/e?CF00Nf0000000GjTk={!Opportunity.Parent_Opportunity__c}&CF00Nf0000000GjTk_lkid={!Opportunity.Parent_OpportunityId__c}&RecordType=01240000000M5NG&ent=Opportunity&retURL=/{!Opportunity.Parent_OpportunityId__c}

According to everything I've been reading, this should work.  It saves with no problems (no syntax errors or anything), but when I execute it, the Parent Opportunity field is always blank--it never auto-populates as it should.

Any help will be most appreciated!