Is it possible to disable or remove the encryption on an existing backup, change encryption, compression, retention and other settings.?
Beginning with Version 6.5.2 of LiteSpeed for SQL Server, the SLSRecast utility (slsrecast.exe) allows you to convert one LiteSpeed backup into another LiteSpeed backup through the command line, optionally changing encryption, compression, retention and other settings. Also, using this utility you can create disk stripe files, append several backups to one file, convert TSM objects to disk backups to restore on another machine.
See the LiteSpeed Help file for details and syntax examples.