There was no need to show Scissor doesn't exist as its known and never denied!! MEMU from BCY & BTT/CPR can come and park at PF2 & PF3 without Scissor & can return back to BCY & BTT/CPR (that could have considered & hence PF4 is still PF4)!!
And all this dont mark any impact to incorrectly change PF4 as PF3 for SHG bound trains!!