We are not aware of any issues with merging a signature field and have tested the field again just now to be sure. There were no updates done to the signature or image merging. Can you provide more information about “lost my Signature Field when the PDF is processed”.
Also, we’re not sure why you would need to “delete the Field Form template again and again and again”… Please provide more information about what is going on that you would need to delete the template.
We remain at your service.