Sorry, but erasing someone's name from a legal document could create a lot of complex issues. I would start over with a brand new Power of Attorney.
Curious why you used an old Power of Attorney? Wasn't the person who wished to make a change in his/her POA unable to have a new one prepared? If the person has memory issues and is unable to present to an Attorney what he/she wants, then the original Power of Attorney has to remain in effect. If the old one was tampered with, then chances are there is no POA.... unless the Attorney has a copy.
Curious why you used an old Power of Attorney? Wasn't the person who wished to make a change in his/her POA unable to have a new one prepared? If the person has memory issues and is unable to present to an Attorney what he/she wants, then the original Power of Attorney has to remain in effect. If the old one was tampered with, then chances are there is no POA.... unless the Attorney has a copy.
Why didn't the person conveying the authority execute a new POA or DPOA?
One doesn't just "erase" any portion of an executed document. I hope you haven't tried to use this yet and compounded the fraud?