I created a new db in copy using my base library (create new library using current library format) and added all the stories in. It pulled in all the metadata except the stuff Google messed up. Not too bad. There were only around ten stories that didn't have the metadata.
So far I'm not liking Copy. It just freezes. I barely got share set up. So far I cant even search on it. I may try Dropbox for my reading list & see if that works. It will be much smaller than the whole library.