I just imported the .gpx file elrojo14 exported from Cachly and it worked flawlessly! The hardest part of the import was getting the file into my dropbox account so Cachly could find it. But once it was there, everything came in beautifully!
There is a little bit of data juggling to make this work, but the reward of offline BM hunting is well worth it. I won't be doing this for casual BM hunting, but when there is a planned outing, this will make it so much easier.