These settings in SSM_CUST are active in PFCG only but not in SU01 or SU10.
Note 367660 - User exits in user and authorization management
http://service.sap.com/sap/support/notes/367660
SAP_BEFORE_PROF_GEN
SAP_AFTER_PROF_GEN
SAP_BEFORE_BATCH_GEN
SAP_EXIT_AGR_DELETE
SAP_EXIT_AGR_TRANSP
SAP_EXIT_USERS_SAVE
SAP_EXIT_USER_COPY
SAP_EXIT_USER_DELETE (called in SU01/SU10, too)
SAP_FULL_USERPROF
SAP_SAVE_AUTH_DATA
SAP_SINGLE_USERPROF
SAP_USERS_TRANSFER (called in SU01/SU10, too, )
Kind regards
Frank