Errordoo Strikes again

Can someone please tell me how to delete studio customizations in relation to accounting>studio>reports>invoices(PDF) We email and print these when producing invoices in the accounting app.

When we change this PDF or reset it changes are not reflected in the document when producing an invoice pdf.

In 16 drag & drop etc were available 17 Not available (What an innovation) and no other changes of the document flow through after a change in the studio screen when saved. Even simple things like changing a text value dont change. I assume this relates to studio customizations and some type of legacy type view etc. 

Being able to list and archive these reports would also be helpful as there are many we dont use.

We are using Odoo 17 Enterprise edition.

Thank you in advance for your consideration