PO number does not show on completed orders

No, not expected behaviour. What version of WordPress and WooCommerce are you using, please?

Woocommerce 7.7.0
WordPress 6.2.2

I entered trouble shooting mode on the default theme and only enabled Woocommerce and this plugin and the PO numbers still weren’t there on completed orders.

Thanks

I’ve tested on my copy of WordPress, running 6.2.2 and WooCommerce 7.7.0, and this is what appears in the admin area.

I’m not sure how you could be experiencing anything differently based on this. When did it start happening? Do you have instances where orders do show the PO number in the admin?

So the PO number is there when the order is created and has the processing status. But once the order is set to complete the PO number vanishes in admin panel, if I put the status back to processing it doesn’t come back.

There is definitely PO numbers set as well as they are shown in the order confirmation email.

Ah, OK. Apologies, I misunderstood the issue. This still isn’t expected behaviour though, I’ll have to investigate further.

Thanks for the report, I’ve just released an update (v3.1) to fix this bug!

Just re-read the initial question and it wasn’t clear at all! Sorry!

Thanks for the update – I will check once a new order has been received.

There is one other small thing, any orders that have been completed and lost the PO number still don’t have it there after the update. Is there any way to get them back?

Cheers!

Unfortunately not — at least, not automatically. If you still have the order confirmation emails for each one with the PO number included, you could manually edit the information to add the PO number back on to each one.

Apologies for the inconvenience.