I'll help with your banking transactions, floatmilwaukee.

The Split feature is still available in the updated Online Banking. Let me show you how:

1. Go back to the Online Banking section and select a transaction that you want to split. 
2. Click Categorize.
3. Go to the right-hand side and click Split. 

Let me share this article for more details: Categorize and match online bank transactions in QuickBooks Online

For non banking transactions, follow the steps in this article on how to use multiple accounts in a single transaction: Enter a split transaction into the register.

Let me know if you need anything else.