Since immigration doesn't have the power to grant citizenship, they might not be in a position to know if the claim that you can apply for citizenship if you are "in country" one day in each of two years prior to applying for citizenship is accurate.
The only way to be certain about the requirements for citizenship is to go to the federal court that has jurisdiction where you live and ask them as the requirements can vary slightly from one court to another.
PS: I think Sarafina is correct. You should be able to apply for citizenship immediately, perhaps without renewing your permanent residency, but that will be up to the court!
PS2: Since it looks like you will soon have your permanent residency reinstated and a new DNI, it might be "better" to wait to apply for citizenship until you have the new DNI in hand, but it won't hurt to go to the court now and ask.
PS3: For those who might be considering citizenship and are not married, the two year residency requirement might have started the first day you ever set foot on Argentine soil. Two years continuous physical presence is apparently not required,