Common reference between Treasury settlements and diary items in IHB diary

When we input EFTs between two of our group owned accounts and let that EFT affect the balance at our in-house bank, the accounting journals produced to reflect both the EFT and balance movement on the IHB do not have a common reference. There is no way ascertain what EFTs or other Treasury movements, link with what movements in the IHB when looking at accounting journals.