Lost local recording after internet went out

Hello,

Started recording a meeting locally (to computer) - then internet went out.  When back online I started recording again - no problem.  The segment recorded after the outage showed up as usual.  The segment recorded before the outage, however, was the bulk of the meeting, and does not appear on my desktop; in the 'recordings' section of my desktop client, it *looks* like a file is there but when I go to convert it says the recording file is empty.  

Thanks in advance for any thoughts on how to recover the lost file - I think I understand that recording to the cloud would preserve recordings in a case like this, so looking to find out if there's a way to recover the lost recording files in this case.

Jeff