Ability to change Standard Receipt to Miscellaneous Receipt?

Hi,

Is there a way to change a Standard 'Unidentified' receipt to a Miscellaneous Receipts?

Scenario: We will receive a check through lock box without any customer information. Receivables automatically create a standard receipt and mark it as 'Unidentified'.

Cash applications agent pick this 'Unidentified' receipt from the queue and realize this is a miscellaneous cash and go to a specific GL account. (Could be any of 200 GL accounts).

So, We need the following

     1) Ability to change a standard receipt to a miscellaneous receipt

     2) Ability to enter user desired GL account. (Not the pre defined GL account from the Miscellanous cash Receivables activity)