(5/3/2024: Edited to remove personal information.)
I have had the same problem with Direct Connect accounts not displaying in the One Step Update Summary. Several times, I have Validated my file and renamed the Runtime.dat files when I am expecting a transaction in one of my Direct Connect accounts. The problem appears to be resolved for the next One Step Update. My accounts are tagged with the date of the latest update and all accounts display in the Summary. BUT with the next One Step Update, even when there are transactions for one or more of the Direct Connect accounts, the Summary does not display any Direct Connect accounts and even for those Direct Connect accounts where transactions were downloaded, the account is NOT tagged with the date of the latest update (it displays "not available").