I have just upgraded to Cryptomator 2 two days ago. When I copy a pre-existing file from the “On My iPad” location within the Files App to a newly minted Cryptomator vault, the resulting encrypted pasted file displays no creation date but does show the current date/time in the metadata “modified” field. This is true regardless of how many files or folders I copy in this way.
So, the inability to preserve original metadata is still a problem. If this was “solved” several years ago, it doesn’t seem so anymore.
P.S. Now that Cryptomator is integrated within the Files app, there is no longer any “Share>>Save to…” feature available. To load a file or folder to an encrypted vault, one must use the “copy and paste” method.