It does not matter what your current status is. but you will be in a queue as soon as your file arrives in the office.
Once the batch in the queue is full, they will change it to IP, that is to say, even if the arrival time in the queue is different they may have same date of IP.
This happened to me, my friend and I changed back to IP at same day but we have 1 months difference dates of arrivals. (We are at same office of course! ). For me it took 2.5 months, for my friend just 1.5.
So just wait, you will get there.