it is surprising... but realty is that only Medical status changes with time...couple of monthhssssssss !!!
and BG status is something which officers do not update.
Below is experienced/info/feedback/read on internet based findings and assumptions;
so process is that first all documents are checked and when medical is passed it is IP2... no matter what your status is
when file is at LVO then while reviewing file they make important status changes
thats why some get PPR just next day of IP2 and some get after 2-3 months..
to further add just ask for your VO, they will tell your current VO where your file is processing..
if it is at LVO expect less than 3 months for PPR from the date it came to LVO