Which Site profile is appropriate

Hi,

Initially, there was only 1 retail company. So the site/store was create was site profile 0110 - Store w/o intercomp. billing.

Now, I had another retail company and there is going to be transfer between the 2 company.

I am about to create site for the new company.

I notice that there is another site profile, 0120 - Store with intercomp. billing.

Should I continue to use 0110 or should I used '0120'?

What the exact differences and what's the impact if I selected the wrong profile?

can anyone advice me?

Thanks

Bye