I am new to Cryptomator and I am wanting to confirm my understanding of the file extensions used so that I can test my data backup and recovery processes.
I have a vault on Google Drive which is backed up nightly to another service. In my case, the backup software requires me to enter filenames to restore. The restore ensures the folder structure is created. From my understanding of the v1.5 docs there are two file extensions used: .c9r and .c9s (in some cases). Is this correct or are there other file extensions to consider?
Also, does Cryptomator create or maintain empty directories in its hierarchy? If so, if these are not restored, would the vault become corrupted?