[R] Merge function - Return NON matches

[RHelpPlease]

Hi Steve,
Thanks for replying.  Here's a small piece of the data.frame:

> bestPartAreadmin[1:5,1:6]
  DESY_SORT_KEY   PRVDR_NUM   CLM_THRU_DT   CLAIM_NO  
NCH_NEAR_LINE_REC_IDEN_CD   NCH_CLM_TYPE_CD 
1     100000193                 290003          20090323               20                                                     
V                                60    
2     100000193                 290045          20091124               21                                                     
V                                60    
3     100000193                 29T003          20090401               22                                                     
V                                60    
4     100000574                 050017          20090527               83                                                     
V                                60   
5     100000574                 050017          20090921               84                                                     
V                                60   

There's 93 columns total in the data.frame, so these are the first six,
where you can see CLAIM_NO.

I wish for the resultant data.frame to "look" just like the data.frame
above, but values for CLAIM_NO (above) are those that differ/don't match the
corresponding CLAIM_NO values in the list (hrc78_clm_no).

Does this help?

Thanks!

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