To verify that all CONNX for VSAM Started Task components have been uninstalled, you can use ISPF option 3.4 to list and delete the data sets defined with the (default) CONNX.STASK high-level qualifier. Next, delete all versions of  the CNXVSAM/CNXVSCT procedures from the production JCL PROCLIB. Finally, if the CNXCFG REXX exec file has been copied to a SYSPROC PDS such as SYS1.LOCAL.CLIST, delete the CNXCFG member.