Hi @dcgcorp
Unfortunately, there’s no way to directly link the bank accounts of two different companies together for them to keep in sync with each other - you would have to treat them separately.
In terms of setting up the loan on QuickFile and management payments etc., take a look at @Glenn’s post here:
http://community.quickfile.co.uk/t/accounting-for-loans/1375/2?u=qfsupport
However, as you’re dealing with a loan between two of your companies, it may be better to speak to your accountant to ensure it’s set up correctly for both accounts.