Returning to Subsonic

After using Airsonic Advanced for a number of months, I'm ready to go back to Subsonic due to a couple of reasons. I export about 100 playlists from a music application to a directory where Airsonic lives. Every time there's a change to a playlist Airsonic adds a "new" playlist of the same name. So I'll wind up with multiples of every playlist that's had a change. And if I delete a playlist from the exported playlists directory, Airsonic does not delete the playlist from its database.
I seem to recall that Subsonic did not have these issues. Can someone confirm that when I import playlists Subsonic will overwrite the old file with the new file thereby eliminating duplicate playlists of the same name.
Since Subsonic hasn't been updated in a number of years, I'm wondering if there are any security issues with v6.1.6 installed on Windows 10 when exposed to the Internet through a firewall.
Thanks.
I seem to recall that Subsonic did not have these issues. Can someone confirm that when I import playlists Subsonic will overwrite the old file with the new file thereby eliminating duplicate playlists of the same name.
Since Subsonic hasn't been updated in a number of years, I'm wondering if there are any security issues with v6.1.6 installed on Windows 10 when exposed to the Internet through a firewall.
Thanks.