How to delete Ref Objects in CRM web UI ?

Hi All,

while creating service confirmation as a followup document to service order I am raising a popup and showing all the reference objects in a popup. Now user will select few of them and click submit button. Now I want to display only selected ref objects in service confirmation. ( I can't restrict at copy control as user has to select manually ).

Currently all ref objects are copying and now I want to delete the remaining objects which are not selected in popup.

how to delete refrence objects ? ( Service confimration order number is not yet created so I am not able to use BOL code , if we can get service confirmation instance by passing GUID then I can delete the objects which are not selected.) .

I have used " CRM_ORDER_MAINTAIN_MULTI_OW" to delete but it is not updating web ui.

Please suggest.