Customized stamp that requires signatures

I have created a stamp which requires a number of signatures.  The issue is that after I stamp the document, and I use the fill & sign to sign the same document, the signatures move to the back of the stamp and they cannot be seen.  I need them to be in the front.  I'm not sure how to change this .  Saving this first doesn't seen to do the trick either.  How do I fix this?