What happens if you still have a MTPFLIST in your DFHRPL concatenation when you use MacKinney Batch to CICS? Will it present a problem?
MTPFLIST is a group a files to open/close/allocate/unallocate. This module will be ignored by our newer MBC product so it won't hurt to have in your RPL list. If you have JCL expecting to find a group list, you'll need to rename it to MBCFLIST.
To determine if you have any JCL using this member, look for an '@' sign in your JCL. For example: OPEN @ACCTFILS