Using the MRGSRC command

I am using the MRGSRC command to retrofit source.  I can see the
difference when I do a CMPPFM.  But I can't get the MRGSRC to recognize
the changes. 

Here is the CMPPFM:

                      Compare Physical File Member (CMPPFM)

 

 Type choices, press Enter.

 

 New file . . . . . . . . . . . . NEWFILE      > QRPGLESRC

   Library  . . . . . . . . . . .              >   TSTOBJNW

 New member . . . . . . . . . . . NEWMBR       > SPRCUSSP

                           + for more values

 Old file . . . . . . . . . . . . OLDFILE      > QRPGLESRC

   Library  . . . . . . . . . . .              >   BKOBJNW

 Old member . . . . . . . . . . . OLDMBR       > SPRCUSSP

                           + for more values

 Compare type . . . . . . . . . . CMPTYPE        *LINE

 Report type  . . . . . . . . . . RPTTYPE      > *DETAIL

 Output . . . . . . . . . . . . . OUTPUT       > *PRINT

 



And Here is the MRGSRC:

                              Merge Source (MRGSRC)

 

 Type choices, press Enter.

 

 Target file  . . . . . . . . . . TGTFILE      > QRPGLESRC

   Library  . . . . . . . . . . .              >   DEVOBJNW

 Target member  . . . . . . . . . TGTMBR       > SPRCUSSP

 Maintenance file . . . . . . . . MAINTFILE    > *TARGET

   Library  . . . . . . . . . . .              >   BKOBJNW

 Maintenance member . . . . . . . MAINTMBR       *TARGET

 Root file  . . . . . . . . . . . ROOTFILE     > QRPGLESRC

   Library  . . . . . . . . . . .              >   DPISRCNW

 Root member  . . . . . . . . . . ROOTMBR      > SPRCUSSP

 Select updates . . . . . . . . . SELECT         *YES

 

Am I doing something wrong?

Why does the CMPPFM find differences, some of which are very
significant, but MRGSRC does not?  

The CMPPFM ends with: CMPPFM ended normally.  No differences found.

And the MRGSRC ends with: Maintenance member SPRCUSSP has no updates to
process.

I am not understanding this.

Thanks,

Marvin