Recently saved local file not available

I saved an excel file to my OneDrive Documents directory (.xlsx) when I was offline.  OneDrive notified that a local copy was saved due to being offline.  However, the file does not exist where I saved it.  I searched the entire documents dir with explorer and it is not there.  What's going on?  When I was back online I was able to open it.  This is not the behavior I selected in OneDrive, I selected always save a local copy.  When I was offline I was able to open other workbooks.   There have been other files that I can't access when offline.  This makes me want to quit using OneDrive.  Can someone please explain how to fix this?