web_convert_param in HTTP/HTML protocol

 During autocorrelation some web_convert_param functions gets added in the script and in 12.5 I found this function was something like the one below,

   web_convert_param("CorrelationParameter_2_URL2",         "SourceString=CorrelationParameter_2",         "SourceEncoding=HTML",         "TargetEncoding=URL",         LAST);

and the script didn's pass the correct correlation value.On analyzing we found that the parameter was not passed as {CorrelationParameter_2_URL2} in version 12.5 ,however in version 12 it was like the one below,

    web_convert_param("ViewState_2_URL2",         "SourceString={ViewState_2}",         "SourceEncoding=HTML",         "TargetEncoding=URL",         LAST);

So even if the function is placed automatically by LR engine there is a discrepancy and thus causing extra work (Automatic correlation is to make life simple,but re-checking for things like these we can do the correlation manually with the help of user guide)

Thanks.