I have a form with a signature field.  It overwrites when sent to the user task for verification, but I need the original signature from the resident to remain in the field.  It doesn't even appear, and becomes an empty field that the user now has to sign (since it is a required field).  How do I prevent it from overwriting when sent to the team?  It seems like the signature is not being saved when sent to the next step in the process (user task to verify the information).  The team needs to be able to edit some of the other field, so setting the whole form to read only will not work.

Edit:  When I change the field option to "display only" it doesn't allow the person filling in the form to sign it; it becomes read-only.