This isn't what we want you to experience, @csalvian. 

I know how this issue had affected you and has stopped one of the most important things you'll need to do to keep up with your business. I'm also anticipating for this to get isolated as much as you do because I truly understand your situation right now and waiting for quite a long time for a permanent fix isn't ideal.

Based on the latest update, the investigation about the unavailability to generate results when using the Search button on the Customers (INV-88393) page has already been closed. This means that those who have reportedly experienced this are now able to search for their customers in QuickBooks Online.

However, since you're still experiencing the same issue, I'd recommend getting in touch with our Customer Support Team. This is the best thing we can do at the moment so we can let our engineers know that there are customers like you who are still affected by the same issue. This way, they'll be able to look over this and once again open an investigation if needed. 

I know these are trying times, but please know that together with our engineers, we are doubling our efforts and putting in so much to isolate this so we can offer our customers like you a permanent fix. We really appreciate your patience with this. 

Moreover, should you need to add, edit, delete, or merge customers in QuickBooks Online, feel free to browse through this article: Add and manage customers in QuickBooks Online.

If you need any updates about this investigation or if you need any more assistance managing your customers in QuickBooks Online, please keep in touch by leaving a comment below. I've got your back. Have a good day and stay safe.