If you are having a new note signed then you are refinancing the existing obligation. Leaving the account number the same has absolutely no bearing whatsoever on the definition of a refinancing.
The new loan amount, whether a purchase or refinancing, goes on line 102 and in the case of a refinancing, internal or external, the amount of the loan being refinanced goes on Line 104 - 105.
_________________________
The opinions expressed are mine and they are not to be taken as legal advice.