3438477 - Source of supply when copying a requisition item

In the Create Purchase Requisitions advanced APP a user creates an item which picks up a purchasing info record as a valid source of supply. 
The user then copies the item and changes the material number. The new item has the price of the copied item and no info record has been assigned. 
If the users adds the material as a new item the corresponding info record with the expected price is found.  

SAP S/4Hana Cloud 

l_search, l_source, ME_SEARCH_SOURCE_OF_SUPPLY_EXP, ME_SEARCH_SOURCE_OF_SUPPLY, CL_SOURCE_OF_SUPPLY_MM, LMEREQF54 LCL_R_SOURCEPROXY.  , KBA , MM-PUR-REQ , Purchase Requisitions , MM-PUR-SQ , Sources of Supply , MM-PUR-SQ-SLI , Source List , MM-FIO-PUR-REQ-SOC , Fiori UI for Sourcing Purchase Requisitions , Problem