Polar ProTrainer Sync
This is a plugin that synchronizes some of the data stored in the Polar files with the data in SportTracks. It is primarily intended to simplify migration from Polar Pro Trainer to SportTracks, rather than for ongoing dual usage. This plugin will not synchronize the exercise information that is stored in the .hrm files; you should import the .hrm files using the standard SportTracks import.
Worked well with some additional fiddling. I mainly wanted this to fix the incorrectly calculated distances (and thus pace etc) in my exercises imported from Polar Pro Trainer. To make the correct values show up, you have to change the exercises to "Use manually entered values". I did this quickly by editing the logbook xml and changing all relevant exercises from useEnteredData="false" to useEnteredData="true"
Great plugin if you use Polar products. It's not designed to be an "every day" sync product, but in reality it only takes at most 1min (if that) to get your Polar files uploaded into PolarProTrainer, then transfered (via this plugin) to SportTracks. This plugin is what made me decide to use SportTracks over the other training tracking software out there.