Hi. I am the owner of a website services blockchain folder to torrent in order to provide users for faster synchronization.
I've received an issue that copying blocks and chainstate folder(located in \appdata\bitcoin) may occur core program to change the pasted folder to sub-directory and download the new(!) blockchain(...). However, when coping only blockchain folder the core recognizes the data and ranges raw-data. I think downloading blockchain and arranging it spends more time and recources than just download via client.
I wonder why bitcoin 0.13.0 just recognized both of the folder which bitcoin 0.13.1 doesn't.