And just FYI...I have a Lumia 830 - with Denim, of course - and these still do not sync; for all those harbouring thoughts they may, when that update comes through. With Cortana only referencing places in Bing Maps on the phone, this has really detracted from the excellent SatNav experience of previous OSs.
I used to collect all my places solely in Google Earth, and had to start doing it in both GE and Here Maps, so that they would sync with the phone. Though slightly irritating, at least I could plan out a whole host of placemarks on the PC, in preparation for trips I was about to make, knowing they would appear in Here on my phone. Obviously, I can (and do) still do this, but it would be useful to be able to ask Cortana to get me directions to these various places, and have other traffic info from 'her' in advance etc. Also, if I search for any places using Cortana, they appear on a different map to my Here placemarks, so one has to flick between the two.
This is annoying, particularly since I could easily export GE places to Bing and do away with using the Here web-based maps. Ideally, Bing maps and Here Maps would reference the same placemarks, which would solve all the problems in one fell swoop. I am led to believe that different users have different viewpoints (particularly based on location), but in my experience, the actual maps in Here are far better for me, for some reason (throughout Europe and the Far East), than Bing Maps (though I'm informed they use the same data). Either way, using a common set of placemarks would enable users (and Cortana) to pick whichever app they favour for a particular job.