Welcome to this forum, @dustinyoung. I see that some of your sub-customers are under the same customer as others are the only ones converted. And only a few have been able to turn into projects.

In your case, ensure the sub-customer is connected to only one main parent customer to make it work. It can't be a sub-customer of a sub-customer. Here's how:

1. Go to Get paid & pay, then select Customers.
2. Look for the sub-customer you want to convert, then select the sub-customer's profile and click Edit.
3. From the Sub-customer dropdown, select the main customer. This is also known as the parent customer.

Then, make sure also that your sub-customer doesn't have any sub-customers:

1. On the same page, look for any sub-customers of the sub-customer you want to convert.
2. Select the sub-customer's profile, then click Edit.
3. Uncheck the Is sub-customer box, and if there are more sub-customers, remove them as well.

You can also visit this article for more insights about using projects and converting sub-customers or move only specific transactions into projects: Change sub-customers into projects.

Know that I'm always here to guide you should you need more help in managing your sub-customers and turn them into a project. Take care!