this somehow deleted the correctly modified properties file.

as this is just a redundant remnant, i removing this line is save and works better

minecraft-server/start-minecraftFinalSetup

@@ -77,7 +77,6 @@ echo "Setting initial memory to ${INIT_MEMORY:-${MEMORY}} and max to ${MAX_MEMOR
 JVM_OPTS="-Xms${INIT_MEMORY:-${MEMORY}} -Xmx${MAX_MEMORY:-${MEMORY}} ${JVM_OPTS}"
 
 if [[ ${TYPE} == "FEED-THE-BEAST" ]]; then
-    cp -f $SERVER_PROPERTIES ${FTB_DIR}/server.properties
     cp -f /data/{eula,ops,white-list}.txt ${FTB_DIR}/
     cd ${FTB_DIR}
     echo "Running FTB server modpack start ..."