Intercompany balances building (zone balancing)

Do you all notice that your intercompany accounts keep growing and growing (zone balancing)? 

They zero out if you include all companies but sometimes we report on only a couple companies and on the balance sheet, our intercompany accts are huge.  Do you ever try to zero them out or "settle" your intercompanies?

You can't just make a je to clear them or the zone balancing system will make offset entries and the balances will just appear opposite and not zero.  We know we could turn off zone balancing and clear them all to zero, but should we??  Does anyone else do this?

Thank you,
Maria