Your log file probably calls the function upd if it is a typical tickerplant setup. Override that function to ignore the initial values on the second run, without inserting them into the table allowing you to split the loading into parts.
upd:{i+:1; if[i within 100000 200000; ignore x; storeSomewhere x]};
Then play the whole file -11!
. Control what portions are actually stored by changing the condional in the if clause.