Cannot find Mojave installer after it was downloaded from Catalina

In order to run a 32-bit app, I need to downgrade from Catalina 10.15 to Mojave 10.14. In Safari, I went to the direct download link: https://apps.apple.com/app/macos-mojave/id1398502828?mt=12 The page for getting Mojave opened in the App store, and after I clicked the "**Get**" button, around 6,04GB were downloaded. But right after, the App updater showed this popup: "***No packages were eligible for install. Contact the software manufacturer for assistance.** An error occured while installing the selected updates*". I **cannot find where the downloaded 6,04GB installer is located** ; I looked in the App folder, on the desktop, in the downloads, and cannot find it. The download must be hidden somewhere on the computer. My understanding is that despite using the direct link to the installer, the App store tries to install Mojave directly when clicking the "Get" button. I expected a "Download" button instead, with the goal to create a bootable installer. Did I miss something? Should the installer be downloaded from the Terminal? --- New attempt: trying to download-only Mojave from the Terminal. **Bugs when trying to download Mojave 10.14 from the Terminal in Catalina 10.15.7** It seems that a bug was introduced with Catalina 10.15.5, which is still here with Catalina 10.15.7: running softwareupdate from the Terminal is not working properly. softwareupdate --list only lists newer versions of MacOS and no previous ones. As for softwareupdate --download --fetch-full-installer --full-installer-version 10.14.6 it reports "Downloading **and installing** 10.14.6 installer", **despite the --download flag which should prevent it** ; and if removing --fetch-full-installer does not work. It also reports twice the following error before starting the download and install: SUPreferenceManager: Failed to set object of class: __NSCFConstantString for key: LastRecommendedMajorOSBundleIdentifier with error: Error Domain=SUPreferenceManagerErrorDomain Code=1 "(null)" This thread confirms the bug: https://www.reddit.com/r/macsysadmin/comments/hagf3o/did_macos_10155_break_the_softwareupdate/ --- Second attempt from the Terminal: administrator@AdministorsiMac ~ % sudo softwareupdate --fetch-full-installer --full-installer-version 10.14.6 Password: Downloading and installing 10.14.6 installer SUPreferenceManager: Failed to set object of class: __NSCFConstantString for key: LastRecommendedMajorOSBundleIdentifier with error: Error Domain=SUPreferenceManagerErrorDomain Code=1 "(null)" SUPreferenceManager: Failed to set object of class: __NSCFConstantString for key: LastRecommendedMajorOSBundleIdentifier with error: Error Domain=SUPreferenceManagerErrorDomain Code=1 "(null)" Installing: 89.0%SUPreferenceManager: Failed to set object of class: __NSCFConstantString for key: LastRecommendedMajorOSBundleIdentifier with error: Error Domain=SUPreferenceManagerErrorDomain Code=1 "(null)" Install finished successfully administrator@AdministorsiMac ~ % According to the logs, the install finished successfully, but the installer cannot be found in the Applications and the iMac is still with Catalina.