• Addressed an issue that Apple introduced in 10.15.5 (FB7706647) that will prevent CCC from establishing an initial backup of a macOS Catalina system volume.
  
  
• Starting in 10.15.5, CCC will no longer back up a macOS Catalina System volume to a disk image destination (i.e. a sparseimage or sparsebundle disk image file). We're making this change reluctantly, unfortunately we just can't get reliable results when using Apple's proprietary utility with disk images.
  
  
• Added a green checkmark emoji to the subject of "task completed successfully" emails.
  
  
• Improved upon the previous attempts to suppress VirusBarrier attached-but-not-mounted disk images in CCC's sidebar.
  
  
• When backing up to a OneDrive or Dropbox folder, CCC will no longer replace online-only placeholder files with a non-placeholder from the source unless the two files' modification dates differ. This resolves an issue in which a user flags a OneDrive/Dropbox folder as "online only" and CCC replaces the placeholders with real files, causing OneDrive/Dropbox to re-upload the content.
  
  
• Addressed an issue in which some sparse files were getting copied during every backup. In some cases this led to a noticeable performance degration.

CCC has many useful features, including Bootable Backups and Clone Recovery HD.

"The macOS Installer creates a proprietary recovery volume on your startup disk that can be used to reinstall macOS. CCC is the only backup software that archives and clones this recovery volume. We simplify this complex procedure into a single click!"