After many trial and error attempts to discover what was causing errors and data loss I have concluded that the folder has a problem. I came to this conclusion because with the file unlocked in E3 a double click and select of Decrypt Folder causes a Restore failed message (attached).
Looking at some of the files in the folder there were a number that Finder decided were invisible. I have recreated all the data from a distinct, not in Espionage, source and the new folder appears to function properly in Espionage.
Looking at some of the files in the folder there were a number that Finder decided were invisible. I have recreated all the data from a distinct, not in Espionage, source and the new folder appears to function properly in Espionage.