If your two source tables have the same fields and you don't specifically tell Qlikview to not concatenate the tables then all the records from both loads end up in Table1. This is usually the right thing to do. If you want to know which record came from which source add a field to store that information.
'This record comes from Source1' as Source
'This record comes from Source2' as Source
Thanks, But sorry i am not properly explain my requirement it is like that
I load a table say
15 rows loaded in the reload
25 rows loaded inthe reload
But from 2 reload when i do reload i only want to reload the second table, i am not want to reload the Table1 because it is already loaded, I want to load only Table2.