If the bill is undoable then undo it. You can then delete the expense and add the time and create a new bill. If you cannot undo the bill the Other option besides deleting the client and restarting is to give a credit for the incorrect expense and then make a time entry and generate a bill.

I tried to credit the expense but is still shows on total costs for that client and we are trying to track the hours and costs accurately. Maybe I am doing something wrong. Thanks

The Credit won't remove the cost only the balance due. The only way to remove the cost is to undo the bill.

I was afraid of that.... Thank you for your response.

Is there a way that I can easily copy billed time to a new user? Or export and re import as non billable? Thanks again.

Is there a way that I can easily copy billed time to a new user? Or export and re import as non billable? Thanks again.

Easiest is click on each and duplicate. If a lot then would need to export and reimport while changing status and client.

The best answer to this question will depend on volume, i.e., how many slips are we talking about.

If just a few, then use the Duplicate slip button on the Slip Toolbar to copy the billed slip data into a new unbilled slip and adjust as needed. (No need to retype everything.)

Yes, we can also do exports and imports, but those are more time and expertise consuming and would involve some customization to make it happen by a consultant. Which means you would need to pay for that.

Again, if it is just a few slips, just Duplicate and edit. But if it is a significant volume that would be worth it to you to have an export and an import template designed for you, then yes, that service is also available if you need it.