You may have noticed the arrival of a new "Download History" folder within the in-app ViewRanger store. This keeps a record of the premium maps that you have downloaded and gives you quick and easy access if you need to redownload these files.
If you are transferring your maps to a new or second handset, you can simply tap on the maps that you want to download.
Right now, only pre-defined map regions are listed in your Download History folder (e.g. south-west England, Great Britain, etc.) We will be extending this to include individual map tiles, etc.