It due to the requirement now to have 200 hours built before sitting the CPL skills test.
Before people used to do cpl sit the test do the IR and then apply for the whole lot when they had 200 hours.
It basically makes it more efficient to do the twin IR first then get your hours up to 185 then do a 15 hour CPL.
The amount of hours hasn't really changed apart from adding the test time on top of the 200 hours its just the order you do things in has changed.
Some schools are not embracing doing the IR first and want to keep the old order of things so want the students with 175 hours and then they do the 25 hour single engine CPL then MEP and then IR.
So they come out with about 223 hours if the IR is done on a FNPT II.
Looking at CV's the 223hours is quite common.