Mapping Company Lookalike Results to a New Table Efficiently

Hi, I have a list of about 1230 and I have run a company lookalike search. How do I map all of the different companies to a new table? I did it once already where I mapped the results to a new table, and I got 12k rows. Although, when I enabled auto-dedupe, it reduced to 49. Is this because all of the lookalike companies for each row where the same and there we only 49 unique ones? I basically want to know if the method that I did imported all of the lookalike companies, or just the ones from the cell I clicked "write to new table" on.