When I create a folder on my android to sync to my PC, what does BTSync do with the files that I choose to sync? Does it: 1. Leave them in their old directory and send them to my BTSync folder on my PC. 2. Move them to the BTSync folder on my phone and then send them to my BTSync folder on my PC. 3. Copy the files to the BTSync folder on the phone and also leave them in their old location, thus creating duplicates, before sending the files to my BTSync folder on my PC. I ask because I've set it up to sync some folders to my PC and the old directories are there but some of them are empty and some aren't i.e. the file structure is there but the content is now in the phone BTSYnc folder. However, this has not happened for all the folders, namely my photos. The SD card is now completely full, which makes me think BTSync has created duplicates, and so my phone is really slow. There doesn't seem to be a single rule that BTSync has followed, it's done a mix of the above. All the files I have selected to sync have been sent to my PC. If anyone could shed some light on the situation that would be greatly appreciated.