A field is missing project wide

In most of our Asana projects we use a custom field “P - Priority”.
It’s been missing since yesterday evening, as if it had been deleted. If so, is it possible to restore it?

I created a ticket 3 days ago without any answer. This is critical for our company.

Hi @Julien_Millérioux apologies for the late response, and welcome to the forum.

Did support get back to you?
If this disappeared from multiple projects it probably means it was deleted from the library. Was it locked?