OData service - MPC_EXT not defined

Hello Experts, We are in RISE migration and we suppose to migrate the OData services from source to destination using XML file import. The import using Data model file (XML) under SEGW->Project->Define model is working fine and generated the service successfully. But the problem is the MPC_EXT thought it has the generated codes in all the method but not defined (i.e., no filter methods and asking to define it).