Ok, I've done everythings that you said, but nothing has changed.
From a brand new installation of indexer and heavy forwarder, I only add this as configuration of my indexer and splunk always merge line ???
/opt/splunk-efr/splunk/etc/apps/search/default/props.conf
[source::/app/local/log/payload_log]
SHOULD_LINEMERGE = False
Here's 2 lines merged as example and there are coming from heavy forwarder
06:58:30.000
severity="INFO" host="app1.cops.intqa102.syseng.tmcs" service_version="1.4.10" client_host="" client_version="2.0.9" Correlation-ID="20151217123221_f4f77d69-828e-41e2-acf9-eedf2d9d72ba" client_rid="" rid="10bfe7d0-3b39-436b-b612-824b630e1dc9" sid="" thread="http-8080-2" category="com.ticketmaster.platform.bam.strategies.PayloadBAMStrategy" datetime="2015-12-18T14:58:28.838Z" bam="payload" appCode="request.rest" activity="" seq="81289" payload="{'common':{'id':{'tmonline-us':{'id':'516110'},'primary':{'id':'dataAdmin-venue-000000000008d36a'},'jetson':{'id':'dataAdmin-venue-000000000008d36a'}},'name':{'es-us':'BUFFALO_ROSE ID = 516110 modified at 09:15','en-au':'BUFFALO_ROSE ID = 516110 modified at 09:15','es-mx':'BUFFALO_ROSE ID = 516110 modified at 09:15','fr-ca':'BUFFALO_ROSE ID = 516110 modifié a 13:31','en-nz':'BUFFALO_ROSE ID = 516110 modified at 09:15','en-ca':'BUFFALO_ROSE ID = 516110 modified at 09:15','en-us':'BUFFALO_ROSE ID = 516110 modified at 09:15','en-mx':'BUFFALO_ROSE ID = 516110 modified at 09:15'},'isTest':false,'source':'tmonline-us','image':[{'width':650,'height':366,'url':'http://qaip10.ticketmaster.net:8001/dbimages/17751v.jpg','path':'/dbimages/17751v.jpg','fallback':false}],'version':1450204318000},'country':{'name':{'es-us':'Estados Unidos','en-au':'United States Of America','es-mx':'Estados Unidos','fr-ca':'États-Unis','en-nz':'United States Of America','en-ca':'United States Of America','en-us':'United States Of America','en-mx':'United States Of America'},'countryCode':'US'},'state':{'name':{'es-us':'New York','en-au':'New York','es-mx':'New York','fr-ca':'New York','en-nz':'New York','en-ca':'New York','en-us':'New York','en-mx':'New York'},'stateCode':'NY'},'city':{'name':{'es-us':'new york','en-au':'new york','es-mx':'new york','fr-ca':'new york','en-nz':'new york','en-ca':'new york','en-us':'new york','se-eu':'new york','en-mx':'new york'}},'postalCode':'12345','zipCode':'12345','address':{'line1':{'es-us':'1495, du Golf','en-au':'1495, du Golf','es-mx':'1495, du Golf','fr-ca':'1495, du Golf','en-nz':'1495, du Golf','en-ca':'1495, du Golf','en-us':'1495, du Golf','se-eu':'1495, du Golf','en-mx':'1495, du Golf'},'line2':{'es-us':'Adress line 2','en-au':'Adress line 2','es-mx':'Adress line 2','fr-ca':'Adress line 2','en-nz':'Adress line 2','en-ca':'Adress line 2','en-us':'Adress line 2','se-eu':'Adress line 2','en-mx':'Adress line 2'}},'location':{'latitude':-72.12345675,'longitude':72.12345675},'timezone':'America/Phoenix','dma':[{'id':281}],'market':[{'id':{'tmonline-us':{'id':'23'},'primary':{'id':'23'}}}],'currency':'USD','isAvailableForNewEvents':true,'hostData':{'host':'PHX','venueNumber':14}}" headers="{Address=[http://app.cops.intqa102.syseng.tmcs:8080/rest/content-persistence-service/1-0/persist/unifiedVenue], Http-Method=[POST], Accept=[text/plain, application/json, application/+json, */], accept-charset=[big5, big5-hkscs, cesu-8, euc-jp, euc-kr, gb18030, gb2312, gbk, ibm-thai, ibm00858, ibm01140, ibm01141, ibm01142, ibm01143, ibm01144, ibm01145, ibm01146, ibm01147, ibm01148, ibm01149, ibm037, ibm1026, ibm1047, ibm273, ibm277, ibm278, ibm280, ibm284, ibm285, ibm290, ibm297, ibm420, ibm424, ibm437, ibm500, ibm775, ibm850, ibm852, ibm855, ibm857, ibm860, ibm861, ibm862, ibm863, ibm864, ibm865, ibm866, ibm868, ibm869, ibm870, ibm871, ibm918, iso-2022-cn, iso-2022-jp, iso-2022-jp-2, iso-2022-kr, iso-8859-1, iso-8859-13, iso-8859-15, iso-8859-2, iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7, iso-8859-8, iso-8859-9, jis_x0201, jis_x0212-1990, koi8-r, koi8-u, shift_jis, tis-620, us-ascii, utf-16, utf-16be, utf-16le, utf-32, utf-32be, utf-32le, utf-8, windows-1250, windows-1251, windows-1252, windows-1253, windows-1254, windows-1255, windows-1256, windows-1257, windows-1258, windows-31j, x-big5-hkscs-2001, x-big5-solaris, x-compound_text, x-euc-jp-linux, x-euc-tw, x-eucjp-open, x-ibm1006, x-ibm1025, x-ibm1046, x-ibm1097, x-ibm1098, x-ibm1112, x-ibm1122, x-ibm1123, x-ibm1124, x-ibm1364, x-ibm1381, x-ibm1383, x-ibm300, x-ibm33722, x-ibm737, x-ibm833, x-ibm834, x-ibm856, x-ibm874, x-ibm875, x-ibm921, x-ibm922, x-ibm930, x-ibm933, x-ibm935, x-ibm937, x-ibm939, x-ibm942, x-ibm942c, x-ibm943, x-ibm943c, x-ibm948, x-ibm949, x-ibm949c, x-ibm950, x-ibm964, x-ibm970, x-iscii91, x-iso-2022-cn-cns, x-iso-2022-cn-gb, x-iso-8859-11, x-jis0208, x-jisautodetect, x-johab, x-macarabic, x-maccentraleurope, x-maccroatian, x-maccyrillic, x-macdingbat, x-macgreek, x-machebrew, x-maciceland, x-macroman, x-macromania, x-macsymbol, x-macthai, x-macturkish, x-macukraine, x-ms932_0213, x-ms950-hkscs, x-ms950-hkscs-xp, x-mswin-936, x-pck, x-sjis_0213, x-utf-16le-bom, x-utf-32be-bom, x-utf-32le-bom, x-windows-50220, x-windows-50221, x-windows-874, x-windows-949, x-windows-950, x-windows-iso2022jp], accept-encoding=[gzip,deflate], accept_encoding=[gzip, deflate], connection=[Keep-Alive], Content-Length=[2229], content-type=[application/json;charset=UTF-8], host=[app.cops.intqa102.syseng.tmcs:8080], tmps-client-app-version=[2.0.9], tmps-client-hostname=[], tmps-correlation-id=[20151217123221_f4f77d69-828e-41e2-acf9-eedf2d9d72ba], tmps-request-id=[10bfe7d0-3b39-436b-b612-824b630e1dc9], user-agent=[Apache-HttpClient/4.3.5 (java 1.5)]}"
severity="INFO" host="app1.cops.intqa102.syseng.tmcs" service_version="1.4.10" client_host="" client_version="2.0.9" Correlation-ID="20151217123221_f4f77d69-828e-41e2-acf9-eedf2d9d72ba" client_rid="" rid="10bfe7d0-3b39-436b-b612-824b630e1dc9" sid="" thread="http-8080-2" category="com.ticketmaster.platform.bam.strategies.PayloadBAMStrategy" datetime="2015-12-18T14:58:28.859Z" bam="payload" appCode="outbound.response.rest" activity="PersistUnifiedVenue" seq="81296" payload="{'persistedId':'dataAdmin-venue-000000000008d36a','persistenceStatus':'Matched','modifiableStatus':false}" headers="{Response-Code=[200], Date=[Fri, 18 Dec 2015 14:58:28 GMT]}"
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