If you had used a built-in tool, the local recordings are, by default, saved in the Documents folder. To retrieve it, follow this sequence C:\Users\%user_name%\Documents. That is, head to your Computer, hit the Computer tab, click the Local Disk button, scroll down and select Users, and finally, open the Documents tab. Alternatively, change the default location to your preferred folder or location for easy and faster access.
To retrieve the original “pre-converted” recording, look it up in the subfolder named Originals – all GoToMeeting files are stored on this folder after a successful conversion.