Yes, it can be deleted, @info-rhettwalker. I’m glad to walk you through the steps so they’ll no longer appear on your active project list.

Before that, make sure there are no open transactions associated with your old or completed projects. If they still have balance or entries involved, you need to move them to another project, sub-customer, or customer first. Then, you can follow the outlined steps below to delete them:

1. In your QuickBooks Online account, go to your Projects menu.
2. Locate the complete/old project.
3. In the Action column, select the Options dropdown and choose Delete.
4. Select Yes to confirm.
   

Please know that entries linked with these projects will remain to keep your books intact. Furthermore, they can still be retrieved in case you need adjustments. Just tap the Small gear icon at the right side of the screen and select Show deleted projects, then choose Undelete and mark as in progress/completed or canceled.

You can also go to your Activity feed (Project menu) in QuickBooks Time or TSheets to delete your completed client’s project. However, it can’t be recovered at this time. Here’s how you do it:

1. Open your Tsheets account.
2. Within the Project page, select the Three stacked dots next to the project to be removed.

3. Click Delete or select In Progress first, then Delete.
   
   

Here's an article that contains details about using projects, how to handle your labor costs and profitability efficiently: Track hourly labor costs and profitability by a project in QBO. By following the steps, your records will surely organize and accurate.

If any other questions arise or you have additional concerns about projects, never hesitate to add comments or mention me anytime. I’ll always be here to ensure all is covered for you. Have a good one!