Hi Jenni,
That’s definitely a bit of a tricky setup, but you’ve already done a great job getting the individual card accounts and feeds in place.
For one cheque account payment covering three separate credit cards, the usual way to handle it is to have a separate liability account for each card, then use the Allocate or Match option in bank feeds to split that one payment across the three credit card accounts. You can group the individual cards under a header account, but it’s worth checking with your accountant or financial advisor first to make sure it works for the way you manage everything.
I also found this forum post for the browser version, but might help point you in the right direction too.
Cheers,
Princess
