Want to call custom CPQ ACTION endpoint URL in iframe of SFDC

Scenario - We are hiding the model line in LIG , so we have created custom RECONFIGURE button and in this the end point URL is from the code itself which is working fine and it is taking us to the correct config page in CPQ

endpoint URL - https://[COMP].bigmachines.com/config/ni_productFamily/productSearch_ni/search_model_ni?bsId=[ID]&configContextKey=&documentNumber=[LINE]&_line_item_list=[LINE]&_from_commerce=true&actionId=36245411&documentId=36244074&source=mainDoc&_has_jet_access=true

so this is working fine and it is taking us to the correct config page in CPQ 

ISSUE - when user clicks on custom RECONFIGURE from SFDC , still it lands us to CPQ config page , where the page URL will take us to CPQ from SFDC ,to avoid this is there any other way where we can call the endpoint URL in iframe itself on custom RECONFIGURE action ???