Can anyone point me in the right direction of how to make a customer inactive in the recent update?

Hello lmdacct2,

Sometimes it's necessary to make an employee inactive and I'll be glad to show you how. QuickBooks makes it easy to get your work done on time so you can focus on the things you love. 

Here's how to make a customer inactive in QuickBooks:

1. Navigate to Sales, then select Customers.
2. Find the customer and in the Action column select the downward arrow and select Make inactive.
3. Select Yes to confirm the request.

I encourage you to check out this helpful video which shows you how to add customers in QB Online in case you need to re-add them. 

Let me know if this info helps. I'll be on standby in case you have other questions.