Hey, I ran into this problem so many times. I'm using QBs Desktop, but the idea behind it should be same. I think I have a solution to it. When you are making a general entry, remember to put the account (i.e. A/P, A/R) which is attached to a customer/vendor on the first line of the page. And finish the rest of the entry like what you normally do. In that way it will show up on the transaction list when you are done entry.

QuickBooks Team, could you improve this feature so that we don't have to be bothered by it?

Thank you