Yesterday, my DME switched me from a Dreamstation to a Resmed AirSense 10 Autoset for Her. I took a short 30 minute nap when I got home and then created a new profile and imported the data into OSCAR. All was well. Last night, I awoke at 3:55, and imported the data for the night. I was so pleased with the results that I decided to try for a couple of more hours of this wonderful sleep time with this new machine. When I awoke at 6:50, I inserted the SD card and imported the data. OSCAR reported that the data was already up to date. As an experiment, I moved the the ResMed profile to a temporary folder, deleted the line for this moved profile in the XML profile file (saw the comment about desktop OSCAR not using this), and created a new profile. The import this time retrieved the full night worth of data. I have both the old and new profile data folders, if this would be beneficial for you to have.
Here is the OSCAR build information in the debugger pane.
00052: Debug: OSCAR 1.0.1-r-1 (darwin x86_64) built with Qt 5.12.2 on Apr 24 2019 19:43:50
P.S. I would be interested in beta testing new versions for MAC OS, Linux (Ubuntu 18 or 19), or Win 10 running on a virtual machine.