The following apple script code saves the preset as "MyPreset.bttpresetcompressedzip" instead of "MyPreset.bttpresetcompressed"
export_preset "MyPreset" outputPath "/path/folder" comment "NoComment" link "https://NoLink" with includeSettings and compress
The following code saves the preset as "MyPreset.bttpresetzip" instead of "MyPreset.bttpreset"
export_preset "MyPreset" outputPath "/path/folder" comment "NoComment" link "https://NoLink" with includeSettings
So it seems that the extension is being always saved adding "zip" at the end, and it can't be imported correctly. Removing the "zip" characters from the extension fixes the problem and the preset can be imported correctly.
I 'm using macOS Sonoma 14.7.6 and BTT 5.468