On Windows, Gleba saves map exports to:
AppData\Roaming\Godot\app_userdata\gleba\user_data\cache<br><br>
AppData\Roaming\Godot\app_userdata\gleba\user_data\cache
<br><br>
You can also find it via:
%APPDATA%\godot\app_userdata\gleba\user_data\cache
Thank you, King.