This is for those working with WHMCS.

The latest update means you can not edit the invoice which is frustrating for all of us so here is the work around until this gets fixed.

Steps in phpMyAdmin

1. Go to tblinvoices
2. Find the invoice you want to edit
3. Locate the invoice by the id column and make a note of this.
4. Run the following sql

UPDATE tblinvoices
SET status = ‘Draft’
WHERE id = 123;

Replace 123 with the invoice ID.

Once the invoice is back into draft you can edit the details.

We await the next WHCMS update for this to be reverted back.