Garmin Express v4.0.23.0 for Mac is available.

v4.0.23.0 Release Notes

• Fixed an issue that caused activities to be deleted after successfully syncing to Garmin Connect.
• Fixed an issue that caused golf course updates to fail.

Spoiler: Source
https://forums.garmin.com/showthread.php?251445-Garmin-Express-Release-Notes

Spoiler: Download
http://download.garmin.com/omt/express/B/GarminExpressInstaller.dmg